A group of university students who belong to the same tennis club, Shino Yuta, Sakurada Miki, Sasaki Rinka, Takano Natsu, Fueki Mana, Tachibana Satsuki and Sakurada Wataru, go on a graduation trip to a cottage in the mountains in winter. Although the seven members seem to be good friends, each of them actually has secrets which they cannot tell anyone about; hidden feelings of love and jealousy. Yuta, the cool and brilliant
