I watched it 3 times. I am waiting for 2nd season!!
All the actors did amazing job! it's a must-have ;)

the story is a about quiet but very smart high school student (sieun)
and the boy who is always sleeping at school and works after classes, he is very good at sports and he is training in MMA (suho). then in the first episode, those two started to become friends. it’s really cute and sweet how they protect each other all the time. then we have beon-Seok, who transferred from another school for rich people because of bullying, in this school, there are also some bullies whose as an aim took Sieun, but he gives with suho good punishment too tho so bullies. those 3 guys become friends that get in trouble together and try to survive together. than there is a girl that helped them and become new part of the group. Beom-Seok was verrrry jelouse and he felt lonely. so he become friends with bullies from school and not only. he want to be a bad guy and get revenge on his friends. suho is mad at him but sieun was Kind of sad and he hopped he will come back. and don’t want to spoil the ending. but there is a lot of fighting scenes and one of the person will end up in coma. they won’t be friends like that used to be. and one of them ends painfully the drama with sweet revenge, his suffering and transferring to another school.

it’s ver worth watching it’s my fav drama!!??