He is the first antagonist that the protagonist, Joker, faces, being a champion volleyball player and current high school coach, who is routinely protected from scrutiny.

The principal's failure to protect Shujin Academy's students from him leads to the formation of the Phantom Thieves of Hearts, kickstarting the events of the game.

They eventually defeat his Shadow self by stealing his Treasure, causing his real self to become guilty and admit his crimes, upon which he is arrested and loses his job.

Kamoshida's confession leads to a public relations disaster that haunts Shujin Academy for the rest of the game due to Principal Kobayakawa's refusal to protect the student body from him.

It is revealed that they, along with all other people, originally had their Shadows in this prison, and that most of the Palace Rulers, including Kamoshida, became apathetic husks rather than genuinely reforming.

Comic Book Resources writer Robert Crosby considered Kamoshida the most terrifying villain of Persona 5 due to how realistic he was.

He spoke of how other villains in Persona 5 feel more fantastical, but Kamoshida is very real, something people deal with in sports, suggesting that he may be based on judoka Masato Uchishiba.

[4] Writer Jeff Vogel also noted how "believable," comparing him to more fantastical villains and saying that the fact that what Kamoshida, who he describes as a "serial rapist" and "one of the most loathsome characters [he's] ever seen in a video game," that could and did happen in the real world.