Ki ni Naru Sono Ki no Uta / Akaruku Ii Ko (気になるその気の歌/明るく良い子; The On My Mind When I Put My Mind To It Song / Energetic Good Girl) is Morning Musume '25's 75th single. It was released on July 2, 2025 in 5 editions: 2 regular and 3 limited. The first press of the regular editions includes a random member trading card of 11 kinds depending on the jacket (22 in total), and one random shiny group card.[1]
The Limited Edition SP includes a Blu-ray disc containing live video of the group's performance at COUNTDOWN JAPAN 24/25 held at Makuhari Messe on December 30, 2024, and the group's performances uploaded on the YouTube channel THE FIRST TAKE.
This is the last single to feature 9th generation member Ikuta Erina.[1]
Tracklist[]
CD[]
- Ki ni Naru Sono Ki no Uta
- Akaruku Ii Ko
- Ki ni Naru Sono Ki no Uta (Instrumental)
- Akaruku Ii Ko (Instrumental)
Limited Edition A Blu-ray[]
- Ki ni Naru Sono Ki no Uta (Music Video)
- Ki ni Naru Sono Ki no Uta (Dance Shot Ver.)
- Ki ni Naru Sono Ki no Uta (Making Eizou) (メイキング映像; Making Video)
Limited Edition B Blu-ray[]
- Akaruku Ii Ko (Music Video)
- Akaruku Ii Ko (Dance Shot Ver.)
- Akaruku Ii Ko (Making Eizou)
Limited Edition SP Blu-ray[]
- rockin'on presents COUNTDOWN JAPAN 24/25 (2024/12/30 Makuhari Messe Kokusai Tenjiba)
- OPENING
- Wake-up Call ~Mezameru Toki~
- SaiKIYOU
- MC
- Shabondama
- Kono Chikyuu no Heiwa wo Honki de Negatterun da yo!
- Mukasuki!
- One・Two・Three (23 Ver.)
- Yuukan na Dance
- Help me!! (updated)
- Wagamama Ki no Mama Ai no Joke (23 Ver.)
- Ren'ai Revolution 21 (updated 23 Ver.)
- THE FIRST TAKE (2024/11・12) Singing Video
- Ren'ai Revolution 21
- Wake-up Call ~Mezameru Toki~
Featured Members[]
Morning Musume '25 promoting "Ki ni Naru Sono Ki no Uta" with Kitagawa Rio
Morning Musume '25 promoting "Akaruku Ii Ko" with Kitagawa Rio
- 9th Gen: Ikuta Erina (last)
- 11th Gen: Oda Sakura
- 12th Gen: Nonaka Miki, Makino Maria, Haga Akane
- 13th Gen: Yokoyama Reina
- 15th Gen: Okamura Homare, Yamazaki Mei
- 16th Gen: Sakurai Rio
- 17th Gen: Inoue Haruka, Yumigeta Ako
Single Information[]
- Ki ni Naru Sono Ki no Uta
- Lyrics, Composition: Tsunku
- Arrangement: Hirata Shoichiro
- Dance Choreography: ENDo
- Akaruku Ii Ko
- Lyrics, Composition: Tsunku
- Arrangement: Okubo Kaoru
- Dance Choreography: YOSHIKO
Performances[]
Concert Performances[]
- Ki ni Naru Sono Ki no Uta
- Akaruku Ii Ko
Chart Positions[]
Oricon Chart Positions[]
- Daily & Weekly Rankings
| Mon | Tue | Wed | Thu | Fri | Sat | Sun | Week Rank | Sales |
|---|---|---|---|---|---|---|---|---|
| - | 2 78,811 |
2 1,157 |
2 1,423 |
14 | 15 | 7 |
Total Reported Sales: 81,391*
Other Chart Rankings[]
| Country | Chart | Highest Position |
Ref |
|---|---|---|---|
 Japan
|
Billboard Japan Single Sales (First Three Days) | 2 (106,702) |
[2] |
Trivia[]
- The single was announced on May 6, 2025.[3]
- 15th generation member Kitagawa Rio did not participate in this single due to her hiatus for rule violations during the production of the single. She only appears in the Limited Edition SP Blu-ray contents.[1][4]
- Despite this, she is included in the promotional photos of the single. However, she did not appear on any of the five CD jacket images.
- This is the first single since "Kono Chikyuu no Heiwa wo Honki de Negatterun da yo!" to not include Ishida Ayumi, and also the first single to not include a 10th generation member as well.
Videos[]
References[]
- ↑ 1.0 1.1 1.2 "モーニング娘。'25 NEWシングル！ 7月2日 発売決定！" (in Japanese). Hello! Project. 2025-05-08.
- ↑ "【先ヨミ】TWS『はじめまして』16.7万枚で現在シングル1位走行中" (in Japanese). Billboard JAPAN. 2025-07-03.
- ↑ https://www.instagram.com/morningmusume_official/reel/DJTdA1FJKfq/
- ↑ "モーニング娘。'25 北川莉央の活動休止に関するお知らせ" (in Japanese). Hello! Project. 2025-04-17.
External Links[]
- Discography: Hello! Project, UP-FRONT WORKS
- Wikipedia: Japanese
- Lyrics: Ki ni Naru Sono Ki no Uta, Akaruku Ii Ko