Katawa Shoujo

Nakai Hisao is a normal high school student, currently in his final year of high school. One day Hisao receives a letter from parties unknown in his locker and waits at the written place for the sender. The person who wrote the letter turns out to be his crush while speaking to her, he suddenly collapses. He awakes in a hospital bed, and is told by the doctors that the reason he collapsed is due to arrhythmia, a rare heart condition that causes his heartbeat to sometimes become irregular. Due to...