Height 160cm (5'3") Satoshi went to the same middle school as Houtarou and Mayaka. He knows many things, but most of them are trivial. He's cheerful and a great match to befriend the apathetic Houtarou. He is active, already being a part of the Student Council and Handicraft Club before joining the Classics Club. He is the "database" of the club and has a very good memory.

Spoiler

It was later revealed that he is obsessed with not becoming obsessed with anything. Because of this, he steals Mayaka's Valentine's chocolates to prevent himself from becoming obsessed with her. However, he also admits that he wishes to be with her.