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// Workers AI · dad joke modeWhat did Ichaicha Mushi say? "I'm steamed.

From Wikipedia, the free encyclopedia
"Ichaicha Mushi"
Digital edition cover, featuring a montage of all physical edition CD covers
Single by Hinatazaka46
ReleasedSeptember 30, 2026 (2026-09-30)
GenreJ-pop
LabelSony Music Labels
LyricistYasushi Akimoto
ProducerYasushi Akimoto
Hinatazaka46 singles chronology
"Kind of Love"
(2026)		 "Ichaicha Mushi"
(2026)
Music video
"Ichaicha Mushi" on YouTube
"Kaze ni Kinmokusei" on YouTube
"Soredemo Itsuka" on YouTube
"Ichaicha Mushi" (choreography) on YouTube

"Ichaicha Mushi" (Japanese: イチャイチャ虫; lit. 'Affectionate Bug') is the 18th single by Japanese idol group Hinatazaka46, released on September 30, 2026, by Sony Music Labels. It features fourth-generation member Yōko Shōgenji as the lead performer of the title track.

Background and release

[edit]

Hinatazaka46 announced its 18th single, titled "Ichaicha Mushi", on August 7, 2026.[1] It is the group's first music release after the departure of Haruyo Yamaguchi. The 14-member main lineup (選抜, senbatsu; lit. 'selection') and formation for the title track were revealed on August 9 on the group's weekly television variety program Hinatazaka de Aimashō, with fourth-generation member Yōko Shōgenji serving as title song center (lead performer) for the third time, after 2024's "Kimi wa Honeydew" and "Zettaiteki Dairokkan",[2] and Mitsuki Hiraoka and Yū Satō being selected for the main lineup for the first time. Four of the newest fifth-generation members, including Satō, joined the main lineup.[3]

The unselected members formed the Hiragana Hinatazaka46 (ひなた坂46) lineup, with Rio Shimizu as center. Marie Morimoto, who would leave the group after the single's promotional cycle, became center for "Pink no Cosmos" and performed it with the members of the squad she formed in Hinatazaka de Aimashō, the travel-themed Morimoto Going-out Squad (森本連れ出し隊, Morimoto Tsuredashi-tai).[4] Finally, Sumire Miyachi and Izuki Shimoda served as centers for the fourth and fifth-generation songs, respectively.[5]

Art director Kumiko Takagi of ONPHA utilized the overall visual concept of "I am the protagonist of my story!" (わたしは、わたしの主人公！, Watashi wa, watashi no shujinkō!). The creative direction reflects how in a modern world overflowing with information and constant social evaluation, the members assert their individuality by spending time with the people who matter the most to them in simple, everyday moments.[2] Dressed in the group's signature colors, they are posed against geometric architectural forms symbolizing the group's historical foundation, while the forward-facing block installations represent the future, with the members' expressions showing the passion of the "current" Hinatazaka46.[6]

The single was released on September 30, 2026 in five editions: Type A, Type B, Type C, Type D, and a regular edition. The four limited editions include a Blu-ray disc, while the regular edition contains a CD only.[7]

Music videos

[edit]
The intact and battered props of Shōgenji's oversized heart.

The title track and its music video were released digitally on September 1, ahead of the physical release.[8] It was choreographed by Rena of the dance collective RHT and the music video was directed by Yoshika Matsuoka, her second collaboration with the group after the "Cliffhanger" music video early that year. Filmed on Kodak Vision3 500T 16 mm film,[9] it depicts "overwhelming love" represented by heart-shaped items, with Shōgenji, who carries an oversized heart, coming to realize the importance of loving herself as well as loving others.[10] According to Shōgenji, the hearts carried by each member represent the different ways people express love, with hers getting more battered as her mind, represented by another version of herself in a sparse white room, loses control over her emotions.[11] The debut live performance was on September 20, 2026, during the group's stage appearance in the Idol Runway Collection 2026 A/W fashion show at Yokohama Arena.[12]

The music video for "Soredemo Itsuka" was released on September 28. It was choreographed by CRE8BOY and directed by Asaya Hamada, who previously directed the music videos for "Kimi wa Honeydew" and "Zettaiteki Dairokkan". The singing scene was filmed with 55 members of the Inagakuen Public High School brass band club playing a live orchestra off-camera, in order to elicit genuine emotional expressions from the singers.[13]

Reception

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"Ichaicha Mushi" debuted at the top of the daily Oricon Singles Chart with 371,000 copies sold.[14]

Track listing

[edit]

All lyrics are written by Yasushi Akimoto. Each edition contains the same first two tracks, with the third track and its instrumental version varying by edition.[5]

Type A
No.TitleMusicLength
1."Ichaicha Mushi" (イチャイチャ虫; lit. 'Affectionate Bug')Tadashi Tsukida4:09
2."Kaze ni Kinmokusei" (風にキンモクセイ; lit. 'Osmanthus in the Wind')Yoichiro Nomura5:04
3."Soredemo Itsuka" (それでもいつか; lit. 'Still, Someday')2TROS4:19
4."Ichaicha Mushi" (instrumental)Tadashi Tsukida4:09
5."Kaze ni Kinmokusei" (instrumental)Yoichiro Nomura5:04
6."Soredemo Itsuka" (instrumental)2TROS4:19
Type B
No.TitleMusicLength
3."Pink no Cosmos" (ピンクのコスモス; lit. 'Pink Cosmos')Atsushi, TomoLow3:31
6."Pink no Cosmos" (instrumental)Atsushi, TomoLow3:31
Type C
No.TitleMusicLength
3."Intro" (イントロ)Atsushi, TomoLow3:36
6."Intro" (instrumental)Atsushi, TomoLow3:36
Type D
No.TitleMusicLength
3."Christmas Countdown" (クリスマスカウントダウン)Kazuya Nagami4:33
6."Christmas Countdown" (instrumental)Kazuya Nagami4:33
Regular
No.TitleMusicLength
3."Boku wa Anytime" (僕はAnytime; lit. 'Anytime for Me')Katsuhiko Sugiyama, M. Nachi5:08
6."Boku wa Anytime" (instrumental)Katsuhiko Sugiyama, M. Nachi5:08

Blu-ray

[edit]

Type A

[edit]

17th Single Hiragana Hinatazaka46 Live at Toyota Arena Tokyo: Director's Cuts Collection (Part 1)

  1. "Nageki no Delete"
  2. "Hanbun no Kioku"
  3. "Glass Made ga Yogore Teru"
  4. "German Iris"
  5. "Mijuku na Ikari"
  6. "Konna ni Suki ni Natchatte Ii no?"

Type B

[edit]

17th Single Hiragana Hinatazaka46 Live at Toyota Arena Tokyo: Director's Cuts Collection (Part 2)

  1. "Kimi wa 0 kara 1 ni Nare"
  2. "Tsuki to Hoshi ga Odoru Midnight"
  3. "Cliffhanger"
  4. "Knock o Suru na!"
  5. "Yume wa Nansai Made?"
  6. "See Through"

Type C

[edit]

17th Single Hiragana Hinatazaka46 Live at Toyota Arena Tokyo: Director's Cuts Collection (Part 3)

  1. "You're in My Way"
  2. "Koishita Sakana wa Sora o Tobu"
  3. "Additional Time"
  4. "My Fans"
  5. "Eien no Sofia"
  6. VTR
  7. "Empty"
  8. "Kimi to Ikiru"

Type D

[edit]

17th Single Hiragana Hinatazaka46 Live at Toyota Arena Tokyo: Behind the Scenes

Personnel

[edit]

List obtained from official website.[5]

Ichaicha Mushi

[edit]

Center: Yōko Shōgenji

Kaze ni Kinmokusei

[edit]

Performed by Hiragana Hinatazaka46.

Center: Rio Shimizu

  • 1st row: Niko Tsurusaki, Rio Shimizu, Tamaki Ishizuka
  • 2nd row: Honoka Hirao, Rika Takai, Sumire Miyachi, Rina Watanabe
  • 3rd row: Nīna Sakai, Izuki Shimoda, Mizuki Ōta, Kirari Takeuchi, Hinano Kuramori

Soredemo Itsuka

[edit]

Performed by all fifth-generation members.

Center: Izuki Shimoda

  • 1st row: Niko Tsurusaki, Saki Katayama, Izuki Shimoda, Sakura Matsuo, Mizuki Ōta
  • 2nd row: Yū Satō, Manami Ōno, Hinano Kuramori, Rika Takai, Nīna Sakai

Pink no Cosmos

[edit]

Performed by the Morimoto Going-out Squad.

Center: Marie Morimoto

Marie Morimoto, Tamaki Ishizuka, Haruka Yamashita, Manami Ōno, Hinano Kuramori, Nīna Sakai

Intro

[edit]

Performed by all fourth-generation members.

Center: Sumire Miyachi

  • 1st row: Yōko Shōgenji, Sumire Miyachi, Rina Watanabe
  • 2nd row: Honoka Hirao, Mitsuki Hiraoka, Nanami Konishi, Tamaki Ishizuka
  • 3rd row: Haruka Yamashita, Kirari Takeuchi, Rio Shimizu, Kaho Fujishima

Christmas Countdown

[edit]

Performed by all members.

Center: Yōko Shōgenji

  • 1st row: Kaho Fujishima, Miku Kanemura, Yōko Shōgenji, Nao Kosaka, Manami Ōno
  • 2nd row: Marie Morimoto, Saki Katayama, Haruka Yamashita, Sakura Matsuo, Hinano Kamimura, Yū Satō
  • 3rd row: Sumire Miyachi, Tamaki Ishizuka, Nanami Konishi, Mikuni Takahashi, Mitsuki Hiraoka, Rio Shimizu, Niko Tsurusaki
  • 4th row: Nīna Sakai, Izuki Shimoda, Mizuki Ōta, Rina Watanabe, Rika Takai, Honoka Hirao, Kirari Takeuchi, Hinano Kuramori

Boku wa Anytime

[edit]

Same as "Ichaicha Mushi"

Charts

[edit]
Chart (2026) Peak

position

Daily Singles (Oricon)[14] 1
Streaming Songs (Billboard Japan)[15] 33

Weekly charts

[edit]
Weekly chart performance for "Ichaicha Mushi"
Chart (2026) Peak

position

Japan (Japan Hot 100)[15] 27
Japan Top Singles Sales (Billboard Japan)[15] TBA
Japan (Oricon) TBA
Japan Combined Singles (Oricon) TBA
Japanese Digital Albums (Oricon) TBA

References

[edit]
  1. ↑ 日向坂46、18枚目シングル「イチャイチャ虫」発売決定 今年で早くも3枚目 フォーメーション発表日も決定 [Hinatazaka46 Announces Release of 18th Single, "Ichaicha Mushi", already their Third This Year; Formation Announcement Date Also Set]. Oricon News. 2026-08-07. Retrieved 2026-09-30.
  2. 1 2 日向坂46正源司陽子センター「イチャイチャ虫」ジャケ写全5種公開 テーマは「わたしは、わたしの主人公！」 [Hinatazaka46's Yōko Shōgenji Center for "Ichaicha Mushi", All 5 Album Cover Variations Revealed; Theme is "I Am the Protagonist of My Own Story!"]. Oricon News. Retrieved 2026-09-30.
  3. ↑ 日向坂46 五期生は“大野愛実だけ”ではない 『イチャイチャ虫』選抜、松尾桜・片山紗希・佐藤優羽らが示す層の厚さ [Hinatazaka46’s 5th Generation Isn’t Just Manami Ōno: The "Ichaicha Mushi" Selection Showcases the Group’s Depth, Featuring Sakura Matsuo, Saki Katayama, Yū Satō, and Others]. Real Sound (in Japanese). 2026-08-26. Retrieved 2026-09-30.
  4. ↑ 日向坂46最新シングル「イチャイチャ虫」歌唱メンバー発表、森本茉莉率いる軍団ユニット曲も収録 [Hinatazaka46 Announces Singing Members for Latest Single "Ichaicha Mushi"; Also Includes a Unit Song Led by Marie Morimoto]. Music Natalie (in Japanese). September 11, 2026. Retrieved 2026-09-30.
  5. 1 2 3 日向坂46 18thシングル「イチャイチャ虫」 [Hinatazaka46's 18th Single, "Ichaicha Mushi"]. Hinatazaka46 Official Site. Retrieved 2026-09-30.
  6. ↑ 日向坂46「イチャイチャ虫」正源司陽子が2度目の単独センター！ 新ビジュアルも公開 [Hinatazaka46's "Ichaicha Mushi": Yōko Shōgenji Becomes Solo Center for the Second Time! New Visuals Also Revealed]. Oshiraku (in Japanese). Retrieved 2026-09-30.
  7. ↑ 18th Single「イチャイチャ虫」商品収録内容決定！ [Track List for the 18th Single "Icha-Icha Mushi" Announced!]. Hinatazaka46 Official Website. August 20, 2026. Retrieved September 9, 2026.
  8. ↑ 日向坂46、18thシングル「イチャイチャ虫」MV公開　“重すぎる愛”をハートで表現 [Hinatazaka46 Releases Music Video for 18th Single "Ichaicha Mushi"; Expresses "Overwhelming Love" Through Hearts]. Oricon. September 1, 2026. Retrieved September 9, 2026.
  9. ↑ @HlROTO_ (August 31, 2026). それぞれの愛の形と、その愛は、誰が為、がテーマです。クリフハンガー以来の松岡芳佳監督と📣 🎞️Filmed on 16mm Kodak Vision3 500T [The theme is different forms of love and for whom that love is. With director Yoshika Matsuoka, whom I worked with on Cliffhanger 📣 🎞️Filmed on 16mm Kodak Vision3 500T] (Tweet) – via X (formerly Twitter).
  10. ↑ 日向坂46正源司陽子が重すぎるハートを運ぶ新曲「イチャイチャ虫」ミュージックビデオ公開 [Hinatazaka46's Yōko Shōgenji Carries a Heart That's Too Heavy in New Song "Icha-Icha Mushi", Music Video Released]. Music Natalie (in Japanese). Retrieved 2026-09-30.
  11. ↑ 日向坂46 正源司陽子ちゃんQ&A完全版 大公開!! [Hinatazaka46 Yōko Shōgenji's Complete Q&A Revealed!!]. websunday.net. 2026-09-30. Retrieved 2026-09-30.
  12. ↑ 日向坂46、ファンの前で新曲初パフォーマンス [Hinatazaka46 Gives First Performance of New Song in Front of Fans]. Modelpress (in Japanese). 2026-09-20. Retrieved 2026-09-30.
  13. ↑ 日向坂46、五期生楽曲「それでもいつか」のMV公開&先行配信開始 下田衣珠季が初センター 18thシングル「イチャイチャ虫」収録 [Hinatazaka46 Releases Music Video and Begins Early Digital Distribution for 5th-Generation Members' Song "Soredemo Itsuka"; Izuki Shimoda Became Center for the First Time; Track Included on 18th Single "Icha-Icha Mushi"]. Oricon News. Retrieved 2026-09-30.
  14. 1 2 2026/09/29付 オリコンデイリー シングルランキング [Oricon Daily Singles Chart, dated September 29, 2026]. Oricon News (in Japanese). Archived from the original on 2026-09-30. Retrieved 2026-09-30.
  15. 1 2 3 日向坂46 [Hinatazaka46]. Billboard JAPAN (in Japanese). Retrieved 2026-09-30.
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