1

Eps 1: Senior Year

2

Eps 2: Booyang: Family Support, Levitation

3

Eps 3: 1+1

4

Eps 4: The Secret

5

Eps 5: Recall

6

Eps 6: Bungaeman

7

Eps 7: The Stranger

8

Eps 8: Black

9

Eps 9: Humanists

10

Eps 10: The Monster

11

Eps 11: Romanticist

12

Eps 12: Partners

13

Eps 13: Jang Ju-won

14

Eps 14: The Idiot

15

Eps 15: N.T.D.P.

16

Eps 16: The Man Between

17

Eps 17: Awakening

18

Eps 18: South and North

19

Eps 19: Final Battle

20

Eps 20: Graduation Day