Teaching Math is so hard

1 Character's Info 

2 Returning To My Country 

3 Junghyuk And Jihoon First Meet 

4 Introduce To Jihoon's Family 

5 Dark Past Of Woojin 

6 Finding Daehyun 

7 Precious Childhood Memories 

8 First day at school 

9 First enemy 

10 New Legend 

11 Love at first sight 

12 bad boy turns into nice boy 

13 Living in the castle 

14 room arrangements 

15 Nation's ideal husband 

16 is that you, Daehyun? 

17 who will win the fight? 

18 Dark past of Daehyun 

19 Hyoseob's wining prize 

20 Help me break up 

21 A jerk took my photo 

22 became his slave 

23 A new fear born 

24 became his teacher 

25 Teaching Math is so hard 

26 Reason of becoming his teacher 

27 Do you like someone? 

28 Woojin's first love 

29 Someone is jealous 

30 New member 

31 New room arrangements 

32 wonderful date 

33 Will he love me too? 

34 Jihoon's first love 

35 Don't cry 

36 Transfer student 

37 What do you know about love? 

38 AMUSEMENT PARK 

39 Date in Bukhansan 

40 everything went wrong 

41 Woojin's new love 

42 One passionate kiss 

43 What is wrong with you? 

44 Angry boy 

45 Junghyuk's sister came korea 

46 Another new member 

47 Found great big brothers 

48 Cool girl 

49 Love is pain 

50 wonderful nightmare 

51 You want me to disappear 

52 Where the hell are you Minjun? 

53 Sad history of Minjun 

54 siblings understanding 

55 awesome night 

56 Awesome night (Woojin+Hyanggi) 

57 Date without dating 

58 Hyoseob likes Junghyuk? 

59 Something is fishy 

60 What's so suspicious 

61 Afraid 

62 Memory 

63 Jealous 

64 Who's that Girl? 

65 Drunk Daehyun 

66 Tiny Little Hamster 

67 Brilliant guy 

68 I am not your sister 

69 What's wrong with her? 

70 Will you go out with me? 

71 Shopping date 