Ooizumi Ryou

This game’s protagonist, brother of Shiori. Has good looks with glasses but is actually a closet otaku. He only plays eroges that has imouto and especially like the one Mai is in. He is a really timid and kind oniichan that tries hard to restore the family but if Shiori avoids him he wont give chase. He tries to carry everything by himself. He is also pretty good at sports and study, and has taught Shiori about basketball when they were small.

Based on Warum's review