A self insert of the author, used in many of his works to make jokes about the characters and to narrate story elements.

Based two classic "Toei Manga Matsuri" films, Great Mazinger tai Getter Robo (Great Mazinger Vs. Getter Robo) and Great Mazinger tai Getter Robo G - Kuuchuu Dai-Gekitotsu (Great Mazinger Vs. Getter Robo G - The Great Space Encounter).

This is the legendary Go Nagai's breakthrough work. Harenchi Gakuen is an elementary school whose teachers and students are all perverts. Boys peep girls changing. Girls pull up their skirts and show off their panties. Actually, it's not as evil as you imagine. They're like cubs playing together. It's only pre-school eroticism, nothing sexual. In spite of that, Harenchi Gakuen became a sensation. Parents, teachers, and politicians hysterically attacked the comic's immorality. 


Includes one extra chapter and two side stories: 
Kikkai tai Omorai - Kasu Tougi Sekaiichi Ketteisen (キッカイ対オモライ カス闘技世界一決定戦) 
Omorai-kun 2001 (オモライくん2001)

Sayoko was just reading peacefully in her backyard when some strange kid in a large overcoat suddenly comes in and swipes her dog's food! Who is this guy and what's gonna happen to Sayoko's life now? One thing's for certain: hilarity ensues!