よっちゃん

A minor character from the game Akane Iro ni Somaru Saka. She's a friend of Minato's and they visit Yamabiko together in Hoshizora e Kakaru Hashi.
She meets the main characters and becomes friends with especially Madoka, whom she shares emails and takes a picture with.
Yocchan is not her real name and she refuses to tell anyone what it actually is.