Overview
むしみこうにゃーのハッピッピー is a frantic, insect-themed Touhou Project arrange by IOSYS stalwarts ARM (Youhei Kimura) and 狐夢想 (Komso), with dual vocals from miko (Alternative ending) and 山本椛 (Momiji Yamamoto). Blasting along at 225 BPM, the track weaves together four melodies from two different Touhou games: 少女綺想曲 ～ Dream Battle, 蠢々秋月 ～ Mooned Insect, and 幻視の夜 ～ Ghostly Eyes from 東方永夜抄 ～ Imperishable Night, plus 春色小径 ～ Colorful Path from 東方花映塚 ～ Phantasmagoria of Flower View. The song's title itself is a playful portmanteau, むし (mushi, "insect") and みこうにゃ (a nonsense phrase), reflecting the presence of Wriggle Nightbug (stage 1 boss of 永夜抄) among the source themes.
Originally released on the 2016 IOSYS compilation album 東方極楽湯界 ─イオシス東方コンピレーション vol.24─, the song arrived in maimai でらっくす CiRCLE on February 20, 2026. Its lyrics are a comedic stream of bug puns, cockroach jokes, and surreal idol-fantasy imagery ("I'm an idol miko!"), punctuated by the refrain "ハッピッピー" (Happippī) throughout. The animated music video was produced by 普透明度/アンダルソ. On the charting side, the MASTER difficulty (designed by じゃこレモン) packs 130 Slide notes, a conspicuously high count that makes it one of the more slide-intensive charts in the set, while the EXPERT chart (designed by サファ太) stands out for its 95 Break notes.
Videos
Charts
DX
BASIC
3(3)
172 notesDesigner: -|Tap 139Hold 14Slide 4Touch 9Break 6
ADVANCED
7+(7.6)
281 notesDesigner: -|Tap 239Hold 17Slide 8Touch 11Break 6
EXPERT
11(11)
511 notesDesigner: サファ太|Tap 315Hold 75Slide 16Touch 10Break 95
MASTER
13+(13.6)
729 notesDesigner: じゃこレモン|Tap 474Hold 38Slide 130Touch 31Break 56
Trivia
- The song is a medley of four Touhou themes: 少女綺想曲 ～ Dream Battle (Reimu Hakurei's stage 4 theme), 蠢々秋月 ～ Mooned Insect (Wriggle Nightbug's boss theme), and 幻視の夜 ～ Ghostly Eyes (stage 1 theme) from 東方永夜抄, plus 春色小径 ～ Colorful Path (Reimu's theme) from 東方花映塚.
- It was originally released on the IOSYS compilation album 東方極楽湯界 ─イオシス東方コンピレーション vol.24─ in 2016, part of a long-running series of Touhou arrange compilations by the doujin circle IOSYS.
- The lyrics reference 道満晴明 (Dōman Seiman), a real manga artist known for works such as Voynich Hotel and Satanophany, used here as a nonsensical interjection in the refrain.
- A notable line in the lyrics mentions a cockroach (ゴキブリ) as a friend to deliver a love letter, fitting the song's insect motif stemming from the Wriggle Nightbug source melody.
- The EXPERT unlock title is 私、普通の女の子に戻れなーい ("I can't go back to being a normal girl"), a self-referential gag about the song's over-the-top idol-miko energy.
- The animated music video (MV) was created by 普透明度/アンダルソ, an artist known for the distinctive visual style seen in many IOSYS Touhou videos.
- The original melodies were composed by ZUN (Team Shanghai Alice), the sole developer of the Touhou Project game series.
- ARM (Youhei Kimura) arranged the track, he is a prolific IOSYS composer also known for other maimai contributions and numerous Touhou arrange works.
- Lyrics were written by 狐夢想 (Komso), a founding member of the COOL&CREATE doujin circle who frequently collaborates with IOSYS.
- The MASTER chart, designed by じゃこレモン, contains 130 Slide notes out of 729 total, a notably slide-heavy design for its 13+ difficulty level.
FAQ
- What is むしみこうにゃーのハッピッピー?
- It is a Touhou Project arrange song added to maimai でらっくす CiRCLE on February 20, 2026. The track is a high-BPM (225) medley of themes from 東方永夜抄 and 東方花映塚, arranged by ARM×狐夢想 with vocals by miko and 山本椛.
- Who composed むしみこうにゃーのハッピッピー?
- The original melodies were composed by ZUN (Team Shanghai Alice). The IOSYS arrange was handled by ARM (Youhei Kimura), with lyrics by 狐夢想 (Komso) of COOL&CREATE.
- What original Touhou songs are sampled in むしみこうにゃーのハッピッピー?
- The song medleys four tracks: 少女綺想曲 ～ Dream Battle, 蠢々秋月 ～ Mooned Insect, and 幻視の夜 ～ Ghostly Eyes from 東方永夜抄 ～ Imperishable Night, plus 春色小径 ～ Colorful Path from 東方花映塚 ～ Phantasmagoria of Flower View.
- What album is むしみこうにゃーのハッピッピー from?
- It originally appeared on the IOSYS compilation album 東方極楽湯界 ─イオシス東方コンピレーション vol.24─, released in 2016.
- Who designed the MASTER chart for むしみこうにゃーのハッピッピー in maimai?
- The MASTER chart (Lv 13+) was designed by じゃこレモン (Jako Lemon), and features 130 Slide notes. The EXPERT chart was designed by サファ太 (Safata).
- What does the title むしみこうにゃーのハッピッピー mean?
- The title is a playful nonsense phrase. むし (mushi) means "insect" and ties into the Wriggle Nightbug theme from 東方永夜抄, while ハッピッピー (Happippī) is a cheerful nonsense refrain used throughout the song's lyrics.
- Who are the vocalists on むしみこうにゃーのハッピッピー?
- The vocals are performed by miko (of the unit Alternative ending) and 山本椛 (Momiji Yamamoto).
Related Songs
恋の氷結おてんば湯けむりチルノ温泉
uno×夕野ヨシミ feat. miko
3710+13
CiRCLE (丸)
イタ電はやめて！ ぼくらのスカーレット・コール
七条レタスグループ
15912+
CiRCLE (丸)
Paranoia
DiGiTAL WiNG feat. 花たん
471013+
CiRCLE (丸)
有頂天ドリーマーズ
森羅万象
4710+13
CiRCLE (丸)
超ナイト・オブ・ナイツ
ビートまりお×まろん
47+11+14
CiRCLE+
Help me, ERINNNNNN!!
ビートまりお
47+10+13
PRiSM+ (彩)
超最終鬼畜妹フランドール・S
ビートまりお×まろん
5812+13+
PRiSM+ (彩)
Idoratrize World
A-One
361013
PRiSM+ (彩)