Your best friend recently confessed his love to you, you accepted his feelings. This broke Ryoba's heart. you come to school the next day you see the corpse of your lover... there was blood all over the classroom. you looked behind you and saw ryoba. she came up to you. "senpai.. you hurt me very much... very much..." - she came closer to you, she was covered in blood, and there was a bloody knife in her hands.