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Series Overview

<Self-Esteem Builders> is a picture-book series that helps children accept themselves as they are and learn to value themselves. Through everyday stories, it presents self-respect as one of the strongest inner resources children need as they grow up in a challenging world.

Author's Letter: Why This Series Was Created

Author Il-yoon Yoo describes self-esteem as one of the most important strengths for living in a demanding world. The series clearly shows that a child's self-esteem is shaped less by a family's economic situation and more by parenting, daily attitudes, and the words and actions children receive every day.

How the Series Builds Self-Esteem

• Encourages positive self-talk such as "I will believe in myself!"
• Builds self-acceptance through messages such as "I love myself as I am" and "I like being me."
• Nurtures independence, confident self-expression, and the ability to receive praise with joy.
• Connects non-comparison, enjoying effort, sharing, asking for help, admitting mistakes, apologizing, and consideration to everyday habits.
• Expands social-emotional growth by helping children focus on the process, not just winning or losing, and congratulate friends who succeed.

Book Themes

The 20 volumes cover self-acceptance, comparison, individuality, accepting defeat, self-worth, choice and responsibility, small achievements, finding strengths, self-affirmation, independence, self-expression, accepting praise, creativity, respecting preferences, sharing, asking for help, admitting mistakes, accepting roles, effort, and consideration. The titles themselves work as positive sentences children can hear, making the set easy to use in counseling, after-reading conversations, and self-esteem displays.

Recommendation and Review

The series includes recommendation, review, and parent guidance by Sung-ae Bang, M.D., Ph.D. in neuroscience from Seoul National University College of Medicine. It presents the practical view that in uncertain times, helping a child's self-esteem take deep root is one of the surest gifts a parent can give.

Sales and Usage Proposal

This set communicates its value immediately to families looking for self-esteem and social-emotional learning. The self-esteem chart, practice chart, certificate, and parent guide make it easy to present as a counseling-friendly product that continues into daily practice after reading.

Components

20 picture books, a self-esteem chart, practice chart, certificate, and parent guide. Suitable for self-esteem and social-emotional reading for ages 3-7.

Series Overview

<Philosophy Stories> is a philosophy picture-book series that helps children develop thinking skills and life wisdom. It turns themes such as identity, justice, happiness, wisdom, relationships, nature, and hardship into accessible and moving stories, while also building the foundations of discussion and written reasoning.

Author's Letter: Why Read Philosophy Stories?

The author's letter presents Philosophy Stories as the one set worth placing on a child's shelf if only one Mango title could be chosen. It emphasizes the ability to think and solve problems. In an age of artificial intelligence, the message is that distinctive thinking, insight, and wisdom matter more than passive memorization.

Philosophy Letters and Writing Prompts

• Uses philosophical themes often found in university essay prompts, including those used by Seoul National University, as story material.
• Presents philosophical messages and self-reflection questions through the author's philosophy letters.
• Extends post-reading thought through "What do you think?" style philosophy-writing activities.
• Helps children speak in their own words about honesty, forgiveness, friendship, leadership, discrimination, happiness, death, nature, and humanity.

Age-Spanning Value

The set can be used from ages 5-7 through early elementary school, the adolescent years of identity formation, and even later preparation for essay-based thinking. It has long-term value as a set that can be read repeatedly and kept for years, supporting the transition beyond picture books into identity formation, integrated curriculum learning, written assessment, reading records, and essay preparation.

Sales and Usage Proposal

This is a strong next-step humanities and writing set after picture books. Because it adapts philosophical topics and essay-style source passages into children's stories, it offers clear value for long-term ownership, repeated reading, and preparation for written reasoning.

Book Themes

The 30 volumes cover core elementary humanities themes such as the precious self, life and death, a just society, the qualities of a leader, a happy life, the value of wisdom, harmonious living, wisdom in daily life, nature and humanity, the meaning of hardship, and right perception. Familiar stories such as the Allegory of the Cave, The Hedgehog and the Rabbit, Who Should Become Chief?, Why Did Gandhi Throw One Shoe?, and The Frog in the Milk Can may be used as question-based discussion and writing prompts.

Components

30 philosophy picture books and a Reading Magic Notebook. Suitable from ages 3-6 and extendable into elementary reading and writing activities.

Series Overview

<Experiential Knowledge Stories> is a curriculum-linked knowledge story series built on the idea that experience is one of the deepest forms of learning. Through Mango Lion field-trip stories, children encounter places and professions they may not easily visit in person, while building background knowledge connected to elementary learning.

Planning Intent and Author's Letter

Author Il-yoon Yoo designed the series so the Mango Lion characters could meet real field-trip places and professions through story. The goal is a set that combines reading and experience, helps children accumulate elementary curriculum background knowledge as they turn the pages, and leaves lasting learning after reading.

Experience and Career Expansion

• Presents curriculum-linked background knowledge through field-trip stories.
• Makes difficult information easier to understand through place-based experiences, career experiences, and character-driven storytelling.
• Gives indirect exposure to 27 careers, including farmer, doctor, dentist, pharmacist, veterinarian, prosecutor, lawyer, film director, robot developer, astronomer, paleontologist, magician, train engineer, marine rescue worker, idol performer, police officer, ceramic artist, weather forecaster, zookeeper, judge, fashion designer, submarine captain, astronaut, pilot, firefighter, children's author, and baker.
• Connects places in the books to real activities through "Let's go experience it!" QR recommendations.

Experience Themes

The 30 experiences include farms, strawberry picking, tidal flats, dinosaur fossils, aquariums, marine safety, zoos, observatories, robots, railway museums, weather agencies, spacecraft, ranches, submarines, amusement parks, poop museums, aviation museums, fire safety, doctors, police, judges, prosecutors and lawyers, pharmacists, dentists, baking, printing museums, magic, ceramics, clothing design, filmmaking, and K-pop. The range combines STEM, safety, careers, and cultural activities, making the series useful for institutional field-trip programs.

Expert Review and Credibility

The series is supported by review from 19 specialists, including Chang-mu Kang, Hyuk-soo Kyung, Sung-soo Kim, Yong-an Kim, Il-seop Park, Chun-geun Lee, Won-hee Hong, Jung-gun Choi, Go-woon Jeon, Yoon-a Yang, Jung-hyun Lee, Joo-won Lee, Yong-dam Jung, Soo-geun Choi, Jong-man Heo, and Chan-joo Park. Their expertise in medicine, law, veterinary science, dentistry, weather, marine rescue, firefighting, space, ceramics, film, fashion, and elementary science education strengthens the depth and reliability of the knowledge content.

Sales and Usage Proposal

This set can be presented as a package that combines reading before and after field trips, career exploration, and curriculum background knowledge. Its broad coverage of museums, careers, science, and cultural experiences makes it highly usable for institutional programs, vacation reading, and school-readiness displays.

Components

30 picture books and 60 play cards. Suitable for ages 3-6 as knowledge-expanding reading and preparation for elementary field-trip learning.

Series Overview

<Ready for Preschool & Kindergarten> is a life-skills picture-book series for children preparing for their first social setting: daycare, preschool, or kindergarten. Through the stories of Mango going to kindergarten and Peach going to daycare, children reduce anxiety about unfamiliar environments and build positive expectations for school life.

Key Points

• Divides everyday themes into 7 daycare books and 13 kindergarten books.
• Covers enrollment preparation, first arrival, classroom rules, teachers, and friendships.
• Includes caregiver guidance to help adults understand and support children's feelings.
• Uses stickers and activity books so children can rehearse school life through play.
• Gives children courage and emotional stability as they enter a new social world.
• Easy to recommend as school-adjustment reading during enrollment and back-to-school seasons.

Book Themes

The 7 Blueberry Daycare books address situations needed for daycare adjustment, such as name tags, the first day, teachers, bathrooms, clothing, friends' belongings, and Santa gifts. The 13 Strawberry Kindergarten books cover key scenes of kindergarten life, including first day at kindergarten, bringing toys, safety, friendships, honorific language, fighting and apologizing, musical-instrument activities, rules, pranks, fire drills, and performances. These topics connect directly to school-readiness counseling and classroom-life guidance.

Sales and Usage Proposal

This set can be promoted during enrollment and back-to-school seasons by presenting arrival, teachers, friendships, rules, and safety together. It is persuasive for seasonal displays, daycare and kindergarten consultations, and parents concerned about separation anxiety or school adjustment.

Components

20 picture books with supplementary activity materials. Suitable for first school-life preparation for ages 1-5.

Series Overview

<Body Awareness, Boundaries & Safety Stories> is a Mango Lion picture-book series that explains body awareness, personal boundaries, and safety through everyday stories. It helps children understand questions about the body accurately and comfortably, respect their own bodies and other people's bodies, understand personal boundaries, and learn how to respond in unsafe situations.

Key Points

• Planned, reviewed, and recommended with body-safety education specialist Professor Jung-won Bae.
• Covers 12 themes, including birth, body differences, puberty changes, hygiene, bath and restroom privacy, personal boundaries, unsafe secrets, and gender stereotypes.
• Builds respect for one's own boundaries and other people's boundaries.
• Presents prevention and response strategies for unsafe situations at a child's level.
• Includes end-of-book guidance that helps parents and children talk together.
• Offers expert-reviewed content that helps families and institutions open sensitive topics safely.

Book Themes

Six books about understanding the body cover birth, male and female body differences, body changes from childhood to adulthood, smell and cleanliness, bathroom and bathhouse boundaries, and not touching the penis carelessly. Six books about protecting one's own body and others' bodies cover unwanted teasing, the safety triangle, strangers, telling about bad secrets, gender stereotypes, and gender roles. Together, they make it possible to explain body awareness and boundary education as one set.

Sales and Usage Proposal

This set addresses an essential but sensitive area of early childhood education through expert-reviewed content. It can serve both home counseling and institutional safety or body-safety education needs because it covers body awareness, boundary education, unsafe situations, and gender stereotypes.

Components

12 picture books and parent guidance materials. Suitable for early childhood body awareness, boundaries, and safety education for ages 1-7.

Series Overview

<Stories of Love and Gratitude> is a character-building picture-book series that helps children recognize the love they receive and extend that love toward family, friends, neighbors, animals, and nature. Through the stories of Mango Lion and friends, it warmly presents gratitude and sharing.

Key Points

• Mango Lion characters and stories that children can easily relate to and enter.
• Stories that expand received love into gratitude and sharing.
• 20 character themes covering self, family, friends, neighbors, animals, and nature.
• End-of-book questions that support conversations about children's thoughts and feelings.
• A structure that develops emotional literacy and relational sensitivity together.
• An accessible picture-book set for very young children for connecting love, gratitude, and sharing to everyday character education.

Book Themes

The books are organized into five volumes each on self-love, family love, friendship, and love for nature. They guide children step by step from self-acceptance, such as being okay even when imperfect, to gratitude toward family, reconciliation and sharing with friends, and love for nature through hedgehogs, fireflies, insects, and tomatoes. This makes the series easy to present for both character education and emotional learning.

Sales and Usage Proposal

This is a strong character and emotional learning set for very young children for gifts, first character-building collections, and family reading displays. Its structure clearly expands love from self to family, friends, and nature, delivering the warm emotional message parents expect.

Components

20 picture books with supplementary activity materials. Suitable for character and emotional development reading for ages 1-5.

Series Overview

<What Should I Do?> is a social-emotional picture-book series that helps children notice, regulate, and express their feelings. It begins with understanding one's own emotions and naturally expands to recognizing other people's feelings and building relationships.

Key Points

• Step-by-step structure with 15 books on personal emotions and 15 books on social emotions.
• Presents feelings children actually experience, such as sadness, anger, embarrassment, and disappointment, through story.
• Uses the question "What would you do?" to practice emotional expression and problem solving.
• Strengthens home use through emotion stickers and a parent guide.
• Provides practical support through emotional education guidance by Dr. Jung-sun Son.
• Offers a 30-volume set that can be positioned as both emotional education and social-emotional learning.

Book Themes

The set is divided into 15 personal-emotion books and 15 social-emotion books. It moves from feelings inside the child, such as happiness, sadness, anger, fear, embarrassment, gratitude, surprise, longing, worry, disappointment, loneliness, irritation, self-worth, and separation anxiety, to emotions in relationships, such as apology, jealousy, listening, empathy, patience, refusal, rules, parental anger, and expressing feelings. Its strength is the ability to present emotional education and social skills together.

Sales and Usage Proposal

This series works well as an independent theme in emotion, social skills, and mind-education displays. For home use, it can be introduced as books that help children name their feelings; for institutions, it can serve as social-emotional lesson material for peer relationships and rule-based situations.

Components

30 picture books, a parent guide, and emotion stickers. Designed for emotional education and after-reading activities.

Series Overview

<Why Can't I?> is a life-habits and character picture-book series that answers the question children often ask in daily life: "Why can't I?" Following Mango Lion and friends through familiar everyday situations, children understand the reasons behind limits and learn positive behavior on their own.

Key Points

• Explains the reason behind "no" naturally through everyday story scenes.
• Uses friendly characters inspired by animals, fruits, and vegetables to increase engagement.
• Balances good habits, manners, safety, health, and character themes.
• Supports after-reading conversation through end-of-book questions that draw out children's thinking.
• Connects reading to home practice through a parent guide and activity sheets.
• Easy to recommend for both home life guidance and institutional character lessons.

Book Themes

The set includes 5 books on life habits, 5 on manners, 10 on basic daily life, and 10 on health. It covers situations parents need immediately, such as haircuts, cleaning up, bathing, getting dressed, sleep, table manners, noise between floors, public manners, sibling conflict, lying, greed, speech habits, media use, brushing teeth, picky eating, vaccinations, and safety at home. The broad and practical range makes it a highly immediate life-guidance set.

Sales and Usage Proposal

Placed across life habits, manners, health, and character displays, the set connects directly to parenting concerns customers already feel. In institutional consultations, it can be positioned as a practical picture-book set that explains the reason behind rules and helps reduce repeated scolding.

Components

30 picture books, a parent guide, activity sheets, and certificates. Broadly usable at home and in institutions.