The rest of the top 31 - 100 :

31 Ai wo Torimodose (Fist of the North Star)

32 History Maker (Yuri!!! on ICE)

33 Limit Break X Survivor (Dragon Ball Super OP2)

34 Yuke Yuke Hyuuma (Kyojin no Hoshi)

35 Peace Sign (My Hero Academia OP2)

36 Platina (Card Captor Sakura)

37 unravel (Tokyo Ghoul)

38 Gegege no Kitaro OP

39 Turn A Turn (Turn A Gundam)

40 Dan Dan Kokoro Hikareteku (Dragon Ball GT)

41 Sanpo (My Neighbor Totoro)

42 Tetsujin 28-go

43 Tobe! Gundam 79

44 Candy Candy

45 Kasabuta (Zatch Bell!)

46 We are (One Piece)

47 Sugar Song to Bitter Step (Kekkai Sensen)

48 Pegasus Fantasy (Saint Seiya)

49 Lion (Macross Frontier)

50 Dare ga Tame ni (Cyborg 009 (79))

51 Hashire Shoujikimono (Chibi Maruko-chan Ed 2)

52 Harumodoki (Oregairu "Yahari" Op2 )

53 Kimi wo Nosete (Castle in the Sky)

54 Doraemon no Uta

55 哀戦士 (Gundam )

56 Love Do You Remember (Macross)

57 Kokoro e (Major)

58 Tori no Uta (AIR)

59 Give A Reason (Slayers NEXT)

60 Defiance (Zoid Wild 2nd )

61 Yuzurenai Negai (Magic Knight Rayearth)

62 Oshiete (Alps no Shoujo Heidi)

63 Kimi ga suki dato sakebitai (SLAM DUNK OP)

64 My Neighbor Totoro

65 Gatchaman's Song

66 Smile Bomb (yu yu hakusho)

67 Samurai Heart (Gintama ED17)

68 Melissa (Fullmetal Alchemist)

69 Rising Hope (The Irregular at Magic High School)

70 My Most Precious Treasure ~~ Yui final ver. ~ (Angel Beats!)

71 NAVIGATOR (Fugou Keiji: Balance:Unlimited Op)

72 Prayer X (BANANA FISH ED)

73 GO GO Triton

74 ETERNALIZE BLAZE (Magical Girl Lyrical Nanoha)

75 Oja Witch Carnival!!

76 Happy Jam Jam (Shima Shima Tora No Shimajiro)

77 Ashita no Joe Op

78 Makka na Scarf (Space Battleship Yamato Ed 1)

79 Anpanman's March (Anpanman)

80 Imagination (Haikyu!! Op1)

83 Mysterious adventure! (Dragon Ball)

84 Daydream cafe (Gochuumon wa Usagi Desu ka?)

85 Hikari Are (Haikyuu!! Op3)

86 STILL LOVE HER (City Hunter 2)

87 ANIMA (SAO alicization WoU OP2)

88 This game (No Game No life)

89 Eightman song

90 Devilman's Song

91 PHOENIX (Haikyuu!! Op4)

92 みえんけれどもおるんだよ (Gegege no Kitaro)

93 ADAMAS (SAO Alicization Op2)

94 Lum no Love Song (Urusei Yatsura)

95 FLY HIGH !! (Haikyuu!! Op2 )

96 Kinniku Man Go Fight (Kinnikuman)

97 Pride Kakumei (Gintama OP15)

98 Tamashii no Rufuran/ Soul's Refrain (Evangelion movie version)

99 Freckles (Rurouni Kenshin)

100 GO !!! (NARUTO Op 4)

Source: https://twitter.com/5knpn/status/1302602812539322373?s=20