Tsukasa can speak and lead an almost adequate life thanks to hearing aids. At first glance, you can’t even tell that there’s something wrong with him, but if you see the instruments, it immediately becomes noticeable that in some places he speaks indistinctly and louder than others, since he doesn’t regulate his voice well. He lost his hearing in childhood, ideally knows sign language, and is more comfortable using it. Tries to talk and control his speech so that it seems as natural as possible.