- Name: Mayumi Morinaga (森永真由美)
- Birthdate: September 19th, 1981
- Twitter: https://twitter.com/MAYUMIMORINAGA
- Blog: https://ameblo.jp/mayumi-morinaga/
- Weibo: https://www.weibo.com/u/3773776284
Mayumi Morinaga is a J-POP and doujin singer whose career began in the late 2000's, performing and writing lyrics for Touhou Project arrangements as senya (an alias she still uses for Touhou related works). Outside of BEMANI, she often collaborates with Xceon and kors k. She is part of the EXIT TUNES label, and also of the vocal arrangement group Yuuhei Satellite.
- Cream puff (member of, with Ryu☆ and VJ Halka)
- Prim / 楓璃夢
- 幽閉サテライト (member of, as senya)
- 純情ディスコード (member of, with Asaki)
- movies (member of, with Xceon and Dai.)
- 博麗神社例大祭コラボユニット (member of, as senya)
- 愉快な⑨周年フレンズ (member of)
- Sakura Bloomin* (2019, with Ryu☆)
- All that is. Is that all? (2019)
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