キミの忘れかたを教えて

"I'm dying but you still do not forgive me" Shuu Matsumoto, a college-dropout living the NEET life, felt it wasn't worth living anymore. At the invitation of his friend Tomi, he decides to visit his hometown and his old high school. A chance encounter with childhood friend turned celebrity, Kiriyama Sayane, turns the wheels of Shuu's fate once again.