Koro-Sensei Q!

The Manga of Koro-Sensei Q! is written and illustrated by Jou Aoto and Kizuku Watanabe and was published in Japan by Shueisha in the magazine Saikyō Jump since 2015 and its still ongoing.

Koro-Sensei Q! (also known as 殺せんせーQ!) is a spin-off manga of the Assassination Classroom series featuring the original cast of the original manga. Unlike the original manga, the spin-off is set in an RPG world where Class 3-E attempt to get stronger but lack the necessary skills to fight. Thus, the  Demon King  decides to train them so the class can eventually surpass and kill him with his speed of '99999' (Poking out of the window).

Characters

 * Demon King (aka Korosensei)
 * Nagisa Shiota
 * Karma Akabane
 * Kaede Kayano
 * Yūma Isogai
 * Taiga Okajima
 * Hinata Okano
 * Manami Okuda
 * Megu Kataoka
 * Yukiko Kanzaki
 * Masayoshi Kimura
 * Hinano Kurahashi
 * Sōsuke Sugaya
 * Tomohito Sugino
 * Kōtarō Takebayashi
 * Ryūnosuke Chiba
 * Ryōma Terasaka
 * Rio Nakamura
 * Kirara Hazama
 * Rinka Hayami
 * Sumire Hara
 * Yuzuki Fuwa
 * Hiroto Maehara
 * Kōki Mimura
 * Takuya Muramatsu
 * Tōka Yada
 * Taisei Yoshida
 * Tadaomi Karasuma
 * Irina Jelavić
 * Ritsu
 * Itona Horibe

Anime
Main article: Koro-Sensei Quest!

Trivia

 * In one of last episodes of Assassination Classroom, Korosensei directly references him coming back to life as an evil demon king.