Soma Ninomiya is 32 years old and the owner of Singularity Entertainment, the talent agency Prism's members used to belong to. He's also the manager of dance group COS☆MOS. He has brown eyes, black hair, and is 6'0".

Driven, ambitious, cunning, and shrewd. Cheeky and shameless. He loves to mock his rival, but doesn't use dirty tricks to win. He wants to be better on his own merits. Soma is determined to have his group win the dance competition and prove that he's the better manager.