Level C is a Japanese manga series written and illustrated by Futaba Aoi and Mitsuba Kurenai.

Mizuki Shinohara is a male teenage fashion model who lives on his own in a very nice apartment and is still in high school.

An adult business man named Kazuomi Honjou had just broke up with his girlfriend and had been kicked out of her house leaving him homeless and having nowhere else to go, then he sets out to find someone new to live with and sees Mizuki on the street.

[9] Frank Panonne of Media Blasters said that "Level C will be uncut, all characters portrayed having sex or in the nude will be depicted as aged 18 or older."

[11][12] Mike Dungan of Mania.com comments on the varying styles of art in the manga since the chapters were not written in order.

"[9] Chris Beveridge of Mania.com comments on the hard subtitling of the OVA and lack of a menu "forces them to front-load the trailers for other shows".