Blue Birthday Episode 10

Karin, in the past, dies in order to save Jun once again. He, Yuto, Mayuki, and Yohei grieve deeply. Jun, however, then remembers that the film contains twenty-four shots, but if the camera is set up correctly, it can go up to twenty-five. This means that there must be another picture left in the camera that hasn't been developed. With this hope, Jun goes back in time to save Karin. (Source: TVDb)