Satoshi Tainaka

Satoshi seems to be a bit more mature than Ritsu, usually having totake care of the problems she caused. Satoshi knows Mio Akiyama because she and Ritsu have been friends for so long, but becomes shy when Ritsu brings the rest of the Light Music Club home without telling him. He is also curious about his sister's doing and eavesdrops sometimes at her door. He also dislikes cold weather. Although he sometimes laughs about his sister or tells her to be quiet when she practices in her room, he still respects her and asks her for permission to hang out with his friends.