One to Four

1 Amigos 

2 Rivals 

3 Cold blooded prince 

4 Room no 316 

5 Friends 

6 Mine 

7 Hate 

8 I Hate You 

9 Something Fishy 

10 Kiss 

11 CIDs 

12 Friends Forever 

13 Drama Club 

14 Selection 

15 Jealousy 

16 First kiss 

17 Drama Practice 

18 Triangle 

19 Miss You 

20 Cultural day 

21 Single combat 

22 Psycho 

23 Rebirth 

24 White Tulip 

25 Just friends 

26 Broken thread 

27 Hollow mind 

28 Dark Cloud 

29 One to Four 

30 Holiday 

31 Ferris wheel 

32 Love 

33 Night 

34 Birthday 

35 College 

36 Doctor Love 

37 A tangled tale 

38 Parallel 

39 Photo 

40 won't go far 

41 Truth or Dare 

42 I need you baby 

43 Confessions 

44 Transfer 

45 Long journey 

46 A big problem 

47 Wait and see 

48 Mask 

49 Mr.X 

50 Date 

51 Highschool love 

52 Doubts 

53 Special episode Q&A 

54 Enemy Friend 

55 Illusion 

56 Break up 

57 Loopholes 

58 Witch-Hunter 

59 Engagement 

60 Next plan 

61 The last Goodbye 

62 Marriage day 

63 Wolf in Sheep's Clothing 

64 The End 