Student council vice president at the Afterlife School.
Naoi was the son of a famous and prestigious potter, but he had always been living in the shadow of his brother, who was artistically gifted. After Naoi's brother died, he was to be the heir to the family name, a title his late brother had. For a period of time Naoi underwent intense pottery training ,supervised by his father.
Soon after, his father became ill and unable to sculpt pottery and mentor Naoi.
Naoi possesses hypnotic powers, which he uses on various occasions throughout the series. In one such case, Naoi uses his powers to help Otonashi recover the memories of his past.
He is always attempting to get closer to Otonashi, showing a much different side to him than other members of the SSS.
He often refers to himself as the god of that world.
Naoi overall is full of himself and think of everyone as ants below with exception of Otonashi. When he first appears, Naoi is an ego fulled bully who would attack anyone who disrespected him behind closed doors where no one could catch him and then erase the memories from people he'd beaten up.