Keishin Ukai is the grandson of the former Karasuno’s volleyball coach. Keishin Ukai smokes and drinks and is willing to speak casually about alcohol to minors. He agrees to coach Karasuno in order to defeat Nekoma in the next training match, because of challenges he made with Nekomata. Ukai is lazy and windsurfing, spending most of his time reading newspapers and putting his feet up or reading people out of the way.