hisao nakai
Hisao Nakai (ä¸­äºä¹å¤«, Nakai Hisao) is the protagonist of Katawa Shoujo. He is an 18 year old male individual that has been diagnosed with cardiac arrhythmia and congenital heart muscle deficiency. The entire story is told from his perspective, starting with his heart attack from being confessed to by Iwanako at the beginning.