Kyousuke Aoi 蒼井享介

Hometown: Nagano

Height: 161 cm

Kyosuke is Yuusuke's responsible younger twin brother. As a genius playmaker and strategist, he is good at solving puzzles and thinking things through. Kyosuke is reliable and takes all of his work seriously, though he sometimes worries too much.

He really loves his brother, but can be a bit overprotective of him. He blames himself for Yusuke's knee injury despite Yusuke insisting that it wasn't his fault. There are times where he doubts himself and wishes he shared his brother's confidence. However, he learns to trust in others more and rely on them after becoming an idol. Both he and Yusuke call the Producer "coach" and their fans "supporters".

While Kyosuke is the more mature sibling, he can be just as playful as his brother and will go along with his games and mischief. The two of them also like going to convenience stores.