I Don't Know What My Little Sister's Friend Is Thinking!
![I Don't Know What My Little Sister's Friend Is Thinking!](http://fmcdn.mangahere.com/store/manga/32487/ocover.jpg?token=2fa8f6adde6d84b0115eb3d8e0da933d32d3dfe9&ttl=1719986400&v=1561699196)
Alternative Name:妹の友達が何考えてるのかわからない
Genre(s): Romance Slice Of LifeComedy
Demographic:Shounen
Summary:
Chie-chan has a friend, Tsyu-chan, and Chie's brother has no idea what she is thinking.