Mosuma (モースマ) is a joint unit between the groups Morning Musume and S/mileage. The group was formed on June 21, 2014, and will disband on October 4, 2014.
- Ninth Generation: Fukumura Mizuki, Ikuta Erina, Sayashi Riho, Suzuki Kanon, Saburo Mami
- Tenth Generation: Iikubo Haruna, Ono Sayuki, Ishida Ayumi, Sato Masaki, Kudo Haruka
- Eleventh Generation: Eguchi Rin, Oda Sakura
- First Generation: Wada Ayaka, Fukuda Kanon
- Second Generation: Nakanishi Kana, Takeuchi Akari, Yamamoto Ran, Katsuta Rina, Tamura Meimi, Tanaka Rika
- [2014.08.30] Jibun no Jinsei (自分の人生)
- Morning Musume and S/mileage have worked together in the past (Mosuma FC Event 2012 and LILIUM Stageplay).
- The group's debut was announced on the last day of the LILIUM Stageplay, by Sayashi Riho.