Original name: ロストデイズ
Release date: January 11, 2014
Series
Average time: 45 minutes
Genres: Mystery
Synopsis: 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.