Shinobu Sengoku

Unit: RYUSEITAI
Age: 15
Birthday: June 9
Club: Ninja Association

Shinobu has chuunibyou and admires ninjas, establishing a ninja association all by himself and spending his days training alone. Ambitious, but simple-minded and gullible. He has a shy personality.

Since he tends to cause small fires during his training, the teachers are keeping an eye on him. He loves high places and attics. Athletic but not the smartest guy around, Shinobu doesn't quite make the best use of his own potential. A member of the broadcasting committee and also RYUSEI Yellow from the unit RYUSEITAI.

(Source: Ensemble Stars! Wiki)