Episode 28:The secret

1 Episode 1: The genius hedgehog 

2 Episode 2: Prince but annoying 

3 Episode 3: Stray fox 

4 Episode 4: I would rather marry my own brain 

5 Episode 5: The denial 

6 Episode 6: The rumor 

7 Episode 7: The transfered guy 

8 Episode 8:Want to be friend 

9 Episode 9: The first blush 

10 Episode 10: The new teacher in Math 

11 Episode 11: My first friend 

12 Episode 12: Trespassing 

13 Episode 13: Melancholy dream 

14 Episode 14: My genius hedgehog is gloomy today 

15 Episode 15: Not interested 

16 Episode 16: Class 1 VS class 2 

17 Episode 17: Sharp tongue 

18 Episode 18:The death eyes of my genius hedgehog 

19 Episode 19: The bait of the stray fox 

20 Episode 20:Our rendezvous 

21 Episode 21: Behind the glasses I wear 

22 Episode 22: Parents attending 

23 Episode 23:Kai's mother 

24 Episode 24:Dust in the air 

25 Episode 25:Kira's big brother 

26 Episode 26: My brother is a drama king 

27 Episode 27:It's been five year, my little baby brat 

28 Episode 28:The secret 

29 Episode 29:Dinner with my brother 

30 Episode 30:The ice never melt 

31 Episode 31: Panicking by the exam 

32 Episode 32:The side couple 

33 Episode 33:The exam 

34 Episode 34: Dinner with you 

35 Episode 35:Ashes in the past 

36 Episode 36: The lion had a sharp eyes 

37 Episode 37:I'll miss you my little baby brat 

38 Episode 38: Don't touch my thorns 

39 Episode 39: Let's go outside! 

40 Episode 40: Being happy? 

41 Episode 41: Fluttered by you 

42 Episode 42:You and I beyond the string's 

43 Episode 43:Eyes on you 

44 Episode 44: Feelings inside the ice 

45 Episode 45: Uncovered secrets 

46 Episode 46:Did the ice hearted genius enjoy? 

47 Episode 47: Wanted to be happy 

48 Episode 48: The secret had revealed 

49 Episode 49:Am I Already Dead In Your Heart? 

50 Episode 50: Heartless person 

51 Episode 51:The secret finally revealed itself 

52 Episode 52:I'm still fragile 

53 Episode 53:Revealing of the past 

54 Episode 54: Class 1-A's War 

55 Episode 55:Ink, wood, and quiet things 

56 Episode 56:The night before ink dries 

57 Episode 57:Paper lanterns and unread names 

58 Episode 58:The space between hands 

59 Episode 59: After the rain 

60 Episode 60:Names and windows 

61 Episode 61"The umbrella between 

62 Episode 62:Four under one umbrella 

63 Episode 63:The edge of stealing 

64 Episode 64:The name in the umbrella 

65 Episode 65:First rain with you 

66 Episode 66:Four chairs, one blanket 

67 Episode 67:Snow in their hair 

68 Episode 68: Hedgehogs don't hibernate 

69 Episode 69:Hatsumode at Midnight 

70 Episode 70:The house behind the gates 

71 Episode 71:The wall between houses 

72 Episode 72:Baby videos and knife scars 

73 Episode 73: Mine 

74 Episode 74:Towel wars and tangerine threats 

75 Episode 75:The 3 Am treaty 

76 Episode 76: Evidence 

77 Episode 77: Objection your honor 

78 Episode 78:The real father 

79 Episode 79:The End of My genius hedgehog 

80 Episode 80: [Side story 1] College with you 

81 Episode 81:[Side story 2] Proposal 

82 Episode 82:[Side story 3] Final week and Fiancé Privileges 

83 Episode 83:[Side story 4] Wedding day 

84 Episode 84:[Side story 5] A new genius kid 

85 Episode 85: [Side story 6] Play date 

86 Episode 86:[Side story 7] Make a wish Ren-nii 

87 Episode 87:[Side story 8] Let's share 

88 Episode 88:[Side story 9] Stealing my wife, Ren-nii? 

89 Episode 89: [Side story 10] The tangerine inheritance 

90 Episode 90:[Side story 11] I always love you 

91 Episode 91:[Side story 12] Morning with my boy and man 

92 Episode 92:[Side story 13] The final ending 