Miwako Sugiyama

Kumi (Yurika Nakamura) is a transfer student at a prestigious high school. She meets Hyo (Yosuke Sugino) who is handsome and kind. Kumi falls in love with him and has her first kiss with him, but Hyo is famous for being a womanizer at school. After she discovers his true side, she gets hurts, but her feelings for him doesn't go away.

A high school girl, Sei Saotome, unexpectedly is transferred to an elite high school in Nagano prefecture due to her parents' house-moving. One day, she meets Mizuki and Taiyo, and is invited to join astronomy club with them. The personalities of two boys are completely opposite from each other. Sei, Mizuki and Taiyo struggle with sorrowful and impatient love-triangle...