Kamen Teacher

Kamen Teacher is back, and yet another school—Hiiragi Academy, the best metropolitan school for celebrities—needs to be "re-educated." But this time Akari isn't the man behind the mask. The secret identity of Kamen Teacher is... Let's find out more about the "legendary" Kamen Teacher Program. 

*Note: Includes "Kamen Teacher vs POLICE" (仮面ティーチャー vs POLICE), a crossover with Ino Head Gargoyle. Two parts.*

Crossover between Ino-Head Gargoyle and Kamen Teacher.

Great Teacher Onizuka is back, and the next stage for his legend is … prison?! The trouble magnet of a teacher reveals that this stint behind bars is thanks to a certain incident with the class he became assistant homeroom teacher of half a year earlier: Kissho Academy’s new class for high school-aged celebrities! Does he regret the exploits that landed him in the slammer? Heck, no. In fact, he’s all too happy to calmly tell his fellow prisoners how the whole thing went down—if they’re willing to listen to his story from the very beginning… 

(Source: Kodansha USA) 

*Includes a one-shot and two extra chapters*