Do it again

1 The start 

2 Arrogant professor 

3 It's Hard 

4 punishment 

5 Dance partner 

6 Club or research 

7 What!? 

8 Do it again 

9 F my life 

10 His Prey 

11 Private lessons 

12 Tutor 

13 Life is hard, Hyunjin 

14 Hot n Cold 

15 Closer 

16 One sided lust (special chap) 

17 You're weird professor 

18 Hotpot 

19 Hotpot and kisses 

20 Drunk & Blurry night 

21 Regret? No 

22 (Side story 1) Seungmin and Chang-il 

23 (Side Story 2) Seungmin and Chang-il 

24 (Side Story 3 Finale) Seungmin and Chang-il 

25 Hangover 

26 What's going on? 

27 Festival? 

28 Scary 

29 Taken care of 

30 Ecstasy & Pure Bliss 

31 Ecstasy and Pure Bliss #2 