千曲川　夜渡

Yato is a member of the school's Softball team, and she attends class 2-B.

Yato has been known for her big breasts since elementary school, it seems they've been growing since then without any sign to stop. She has a big complex about this, she even tries all sorts of methods to reduce their growth. Yato tries to avoid boys most of the time, since boys are constantly looking at her because of this trait of hers.