Ushinawareta Mirai wo Motomete

A sci-fi visual novel developed and published by Trumple for the PC. The game follows protagonist Akiyama Sou and his group of friends who make up Uchihama Academy's infamous astronomy club.
 PC

Overview

Ushinawareta Mirai wo Motomete is a sci-fi visual novel developed and published by Trumple for the PC. The game was released in Japan on November 26, 2010.

A 12 episode anime adaptation of the game aired from October 4, 2014 to December 20, 2014. The game has also received a manga adaptions.

Story

After being knocked out by a member of the judo club, Sou, the protagonist, wakes up in the school nurse's office and feels a tremor. Startled, he heads out of the office and stumbles across an unconscious girl. When she awakes she identifies him and calls out his name but soon disregards her comment. She regains her composure and identifies herself as Furukawa Yui, a student at Uchihama Academy. The following day she asked to join the astronomy club, who is currently investigating mysterious occurrences that are occurring in Uchihama Academy.