my suggestion is to use the name Choi jadoo

Kim seondol/ doldol: Lee yunseok's best friend, sometimes likes to tease jadoo with Lee yunseok and is also often teased by Lee yunseok, sometimes has physical fights with jadoo, he is rich and has a fat and stocky body, likes to eat a lot and once liked minji, likes to play soccer with jadoo and Lee yunseok.

Kim Minji (Jadoo's Best Friend): A very feminine, sweet, obedient, and smart girl. In contrast to Jadoo's tomboyish nature, Minji is Jadoo's number one supporter who is always loyal. Interestingly, before becoming feminine, Minji used to be a big fan of heavy metal music, liked Yunseok but kept quiet because she knew Yunseok liked her best friend, he was rich.

Lee Eunhui: Jadoo's arch-enemy and frenemy. Eunhui is a very arrogant girl, always wants to be the center of attention, likes to show off, and often teases other children, she is rich, she secretly has a crush on Sungi.

Yoon Sungi / "Ddalgi": A shy boy with a unique face shape that resembles a strawberry (Ddalgi means strawberry in Korean). Sungi is very good at drawing, has an artistic soul, and his parents own a bakery.

Choi Mimi: Jadoo's younger sister who is very feminine and loves to dress up (the opposite of Jadoo).
Choi Sungki (baby): Jadoo's adorable youngest baby brother.

Gender:
Women ♀
Full name:
Choi Jadoo

Age: 18

Like:
Snack
Eat
Meat
Bread
Animal
His younger siblings
handsome man
Sport
spicy red rice cake

Dislikes:
Lee Eunhui (enemy and friend)
Kim Nuri
Romi Park
Andong
Anchovy
Vegetables
Truffle (allergy)
Milk (for lactose intolerance)
Constantly being disturbed
Her diary was read or stolen
Being teased or teased by Yunseok
Social Information

Residence:
Seoul, South Korea

Family:
Choi Hodol (father)
Kim Nanhyang (mother)
Choi Mimi (younger sister)
Choi Seunggi (younger brother)
Kim Hwan (uncle)
Kim Jisu (aunt)

Friends:
Kim Minji (best friend)
Kim Seondol
Lee Yunseok
Lee Eunhui (sometimes)
Yoon Sung Gi
Jang Seonghun
Go Jeonbok
Jeong Sujin
Daniel

Enemy:
Lee Eunhui (enemy and friend)
Kim Seondol (sometimes)
Lee Yunseok (sometimes)
Go Jeonbok (formerly)
Kim Nuri
Park Romi
Andong

Beloved:
Park Romi (former crush)
Andong (former crush)
Daniel (crush)
Pet: Nurungji (pet cat)

Jadoo has fair skin with pink cheeks, big black eyes, cute and small lips, black hair with bangs that is often braided into a donut shape with red beads, if it is loose or in a ponytail it will be very pretty, sometimes dirty and likes to pick his nose, it fits perfectly with Yunseok who likes to fart.

he liked jadoo since the beginning when he moved schools in 3rd grade of elementary school, at first he felt intimidated by jadoo's barbaric nature, but jadoo actually took pity on him because of his illness, during sports class, jadoo fell down and washed his face with his long hair loose, making Jang seunghon fall in love, especially when jadoo gave him a snail (green) he kept the snail, and really loved the snail, and from then on he only ever liked jadoo.

Gender: Male ♂
Full name: Jang Seonghun
Age: 18
Like:
Choi Jadoo (crush)
Green snail (jadoo pet)
Jadoo's younger siblings (Choi Mimi and Choi Seunggi)

Dislikes:
Lee Yunseok (rival)
park Romi (jadoo's ex-girlfriend)
Andong (Jadoo's ex-partner)
Yunseok threw his snail
When Jadoo likes another man or there is another man near Jadoo.
Sports and physical activity
After school classes

Residence:
Seoul, South Korea
Relatives: Unnamed parents, father director
Friends:
Choi Jadoo (crush)
Kim Minji
Kim Seondol
Lee Yunseok (sometimes)
Lee Eunhui
Yoon Sung Gi

Enemy:
Lee Yunseok (rival)
Park Romi (jadoo's ex-boyfriend)
Andong (Jadoo's ex-partner)
Lover: Choi Jadoo (crush)

Pet:
green (pet snail given by Jadoo)
Eunsil (pet dog)

He is rich, very rich, always guarded by his personal bodyguard, a middle-aged man he trusts who is also very close to Jadoo and his friends...

MBTI: INFJ

Seonghun is a shy, quiet, loving, caring and introverted boy.
humble, shy, not arrogant, likes to share especially with Jadoo, kind, understanding, caring, always tries to help, is kind and sweet to Jadoo, always shows his soft side when with Jadoo, quiet, a loner, not easily angered, calm, often feels amazed and falls in love with Jadoo's charm, his love is shown by actions, very very loyal, and likes Jadoo since 3rd grade of elementary school, when he first moved schools, Seunghon rarely expresses himself and is very open to Jadoo, sometimes can be absent-minded, and can still be jealous and angry, sometimes also judgmental, he often underestimates his own illness, he is smart, thorough and academically intelligent, takes many extracurricular activities and additional classes which often make him tired, he is liked by many girls even though he is not as popular as Yunseok, his body is not too tall, only around Yunseok's chin, and wherever he goes he is always supervised by his trusted servant who calls him 'young master' because of his father's orders who is worried that his illness will get worse.

Seonghun has pale skin, black eyes and long, golden blonde hair. Seonghun looks feminine for a boy but is still handsome, and unlike the other boys in his friend group (Yunseok, Doldol, Ddalgi), he does not have thick eyebrows. He is weak and sickly who often misses gym class because of his health, he has leukemia.

Yunseok has had a crush on Jadoo since kindergarten and is a bit mean to him because of it. He often teases her, steals her things, farts, lifts her skirt, and makes her do chores to show his affection. Although he often bullies Jadoo, when others start being mean to him, he won't hesitate to defend him. For example, a student shot a bullet at Jadoo's hair. Yunseok tracked the person down and beat him up.
Yunseok knows that Kim Minji (Jadoo's best friend) likes him, but Yunseok doesn't care and often uses Kim Minji to get Jadoo's attention.

Gender: Male ♂

Full name: Lee Yunseok

Age: 18 years
Likes: Choi Jadoo (crush)
Pizza
Soda
Cherry tomatoes (because they remind him of jadoo)
Squid
Sport
Become popular
Handsome

Dislikes:
Jang Seonghun (rival)
Lee Eunhui (arrogant girl who often mocks Jadoo)
Park Romi (jadoo's ex-boyfriend)
Andong (Jadoo's ex-partner)
Daniel (a foreign footballer friend who likes jadoo)
Jadoo is in danger
Inviting people to his house
People touch his things in his house
Defeat

best friend: Choi jadoo (best lover for him)
Kim Seondol

Lee Yunseok is an only child, his mother is very busy in her shop selling gifts, and his father is a ship captain so he rarely comes home, his family is quite well-off, his house is big, although not as rich as Seunghon's.

Relatives:
Parents (mother and father)
Friends:
Choi Jadoo (crush)
Kim Minji
Kim Seondol (best friend)
Lee Eunhui (sometimes)
Yoon Sung Gi
Jang Seonghun (sometimes)

Enemy:
Lee Eunhui (the arrogant girl who often makes fun of Jadoo)
Jang Seonghun (rival)
Park Romi (jadoo's ex-boyfriend)
Andong (Jadoo's ex-partner)
Daniel (a foreign footballer who is liked and likes jadoo)

Lover: Choi Jadoo (crush)

Lee Yunseok is also liked by many women and was attracted to several women, such as Minji (Jadoo's best friend), a woman on Jeju Island who is also his friend and Jadoo's friend, and a popular girl, even though her heart is still for Jadoo.

MBTI: ENTJ
blood type: o

Yunseok is a lively, energetic, athletic, mischievous, intelligent, clever and confident boy.

Yunseok is cheerful and energetic, a friendly and popular extrovert in his school and is considered handsome by the girls, which means he gets a lot of chocolate on Valentine's Day. He is also athletic, often playing sports with his friends and is as good as Jadoo at sports, although he can be competitive, which is especially seen when he is jealous of Seonghun or other guys close to Jadoo or when someone is better than him at something. He also seems confident and determined, especially when he gets competitive, but he can be overconfident at times.
Yunseok is shown to have good leadership skills, this leadership ability explains why he is always the class president. He also seems loyal and protective, especially towards Jadoo, he made sure that the other boys would not continue to bully Jadoo, he carried Jadoo because his knee was injured, even though Jadoo refused his offer.
Yunseok seems to be mischievous, playful, and sometimes childish as he is often seen bothering Jadoo or making fun of him, and he does childish things like pulling his skirt, cutting his jump rope, farting in his face, etc., and it's not just Jadoo that he bothers as he sometimes farts in his classmates' faces, even his own best friend. Yunseok seems to be a bit touchy as he can get a bit upset, especially with someone like Seonghun or when he's in a competition and loses to someone, but he's not short-tempered, just easily irritated and doesn't hesitate to show his jealousy and anger.

Yunseok has fair skin, black eyes, thick eyebrows, and short brown hair with a few strands sticking out on the right side. He is tall, considered handsome in his school and gets a lot of chocolate on Valentine's Day because of it, he is also strong and athletic.

Jadoo's height is only as high as Yunseok's chest