Tomioka Giyu (17-18) ends up in a coma after a incident and wakes up two weeks later with no memory of the actual event, nor anything, not even himself. Starting over at school maybe challenging, with a purple-haired girl, Shinobu Kocho (16-18) who makes it her goal to recover his memory. She states,"It's my fault he got into that accident." With limited time, can Shinobu save Giyu and talk to him again about what happen and fix their relationship, or will she just have to move on with this new version of Giyu.