Characters

Chapter 1: Amazing Spelling in Idioms, Proverbs, and Idioms
Sadongi's rapid progress(?) / Imitation vs. Impersonation / Flash in the east and west vs. Flash in the east and west / Majestic vs. Majestic / Disintegration vs. Disintegration / Pretend not to know vs. Disregard / All alone vs. All alone / Running away in the middle of the night vs. Running away at night / Blindfolded and meowing vs. Blindfolded and meowing / Goblin with a vine vs. Goblin with a vine / Outrageous vs. Deafening / Putting down a sickle and a worm vs. Putting down a sickle and a memorizer / Even a blank piece of paper is better than holding it vs. Even a blank piece of paper is better than holding it / Cheerful vs. Cheerful / Long and languid vs. Long and languid / Procrastinating vs. Procrastinating / Reading sutras to a cow's ear vs. Reading sutras to a cow's ear / Hwa-ryong-jeom-jeong vs. Hwa-ryong-jeom-jeom
ㆍ Singing with Yako: 3 Songs You Can't Sing Without Making a Mistake Until the End

Chapter 2: Spelling that is confusing even when the spelling is wrong
Spelling contest / Sewing vs. Needlework / Seat for the elderly vs. Seat for the elderly / Meat vs. Meat / Scroll vs. Scroll / Consider vs. Still / Three days vs. Three days / Almost vs. Almost / Intervene vs. Intervene / Frown vs. Frown / Whole vs. Whole / Brave vs. Kneel / Hopping vs. Hopping / Gossiping vs. Noisy / Tired vs. Tired / Passable vs. Inquiring / All sorts of things vs. All sorts of things / Layman vs. Brainless / Fidgeting vs. Restless
ㆍ Singing with Yako: Something you must do at least once in your life

Chapter 3: Why is this different? Awkward spelling
Scary guys I met in the alley / Payment vs. Payment / Appearance vs. Appearance / Vacancy vs. Vacancy / Preservation vs. Preservation / All vs. All / Good luck vs. Good luck / Milk carton vs. Milk carton / Different vs. Wrong / Control vs. Adjustment / Soon vs. Not far away
ㆍ Song I want to sing with Yako: National Anthem

Chapter 4: Spacing and Punctuation Marks as Visible as You Know
Sadong's Messy Diary / Once vs. Once / Can't vs. Can't / Together vs. Together / One, Two vs. One, Two / Big Brother vs. Big Brother / A Week of Friendship / As Much vs. As Much / As Much vs. As Much / Various Punctuation Marks / Sadong's Perfect Picture Diary
ㆍ Sing with Yako: As long as it's not me

A tiki-taka KakaoTalk spelling battle between spelling obsessive Yako and spelling destroyer Sadongi
Completely conquer the confusing vocabulary and spacing!

The confusing vocabulary and spacing in textbooks were naturally incorporated into Yako and Sadong's KakaoTalk conversations and comical daily episodes.
From words with similar pronunciations like "senior-yakjaseok vs. senior-yakjaseok" that can be easily mistaken for others, to words that even adults can easily confuse like "payment vs. settlement," the book freely transitions between KakaoTalk conversation format and episode cartoon format, fully reflecting children's tastes, allowing them to fully internalize the textbook vocabulary that is essential for children to know but challenging.
Moreover, our Sadong's courageous attitude of not being afraid of making mistakes, even though he is still young and clumsy, is also worth learning from.
As you read the book, you will find yourself infinitely empathizing with the episodes that destroy spelling without even realizing it, and you will have the special experience of growing up with Sadong in a dignified and fast-paced manner.