R-15 (あーるじゅうご, Āru Jūgo) is a Japanese light novel series written by Hiroyuki Fushimi and illustrated by Takuya Fujima.

A manga adaptation illustrated by Hayato Ōhashi started serialization in the June 2010 issue of Kadokawa Shoten's Monthly Shōnen Ace magazine.

Despite negative perceptions many people have of him, he aims to be at the top of his class and be recognized as the world's greatest writer.

The R-15 light novels are written by Hiroyuki Fushimi, with illustrations by Takuya Fujima.

[3] A four-panel comic strip spin-off manga titled Chima R-15 (ちまR-15) and illustrated by Nenga Ninomiya began serialization in volume one of Kadokawa Shoten's 4-koma Nano Ace magazine sold on March 9, 2011.