Yukihime

The protagonist had been living an aimless high school life ever since losing his father in an incident a year ago. His childhood friends Mizuki and Ayako each tried to encourage him in their own ways... It was then that a transfer student came bursting into their lives. The transfer student's name was Omiyama Yuki. But that nostalgically familiar name was also the memory of an unforgivable sin between two people.