Also known as: 天ヶ瀬冬馬
- Voiced by: Takuma Terashima
- Age: 17
- Personal Song: "BANG×BANG"
Tōma is one of the idols introduced in The iDOLM@STER 2. The leader of "Jupiter", he is a year younger than Takane. His hobbies are soccer, cooking, and figure collecting. His character image songs, which are shared with the other two members of Jupiter, are "Alice or Guilty" and "Koi o Hajimeyou". In the anime, he slightly admires Chihaya's recovery from the exposure and her singing during Idol Jam. The Idolmaster 2 hints at a potential relationship between him and Haruka.
He and his group are signed onto 315 productions in iDOLM@STER Side-M, becoming one of two main idol groups for the company (the second being Dramatic Stars).
