Sotsugyou M: Seito Kaichou no Karei naru Inbou

The phenomenon of Sotsugyo M starts with a hentai game for PC called Sotsugyo created by Kei Arisugawa, that got a great success. The game was aimed at men, since it was about dating the five high school graduates girls in the game.
This game produced its sleeves, OVAs, video games, etc.. One of these results was Sotsugyo M a radio broadcast novel that was aired in 1995. It became popular and Sotsugyo M became an own series (consisting of OVAs, novels, manga). Thanks to that has created two versions of the manga series: Sotsugyo M and a continuation of history, Sotsugyo M +. Sotsugyou M+ got an anime version of 2 OVA’s called Sotsugyo M Our Carnival
There are 2 games based on Sotsugyo M: Sotsugyo III Wedding Bell in which the characters of Sotsugyo & Sotsugyo M are rivals, and Sotsugyo M: Male Graduation: Seitokai Naga no Kareinaru Inbou that is an adventure simulation with the character of Sotsugyo M.
The story focuses on five students attending the Seiryuu Private Senior High. Each with different personalities. Mikimaro Shimura, a character with a childist personality, just thinking about making friends and in his beloved Arai, Syo Nakamoto, the genius of the class that wants to learn to treat people better, Arai Togo, the infamous playboy and bad boy of the school; Yuusuke Katou, the active student in love with the teacher; Takagiare Shimon, the new student with a lot of money. These students must learn to cooperate and learn to treat and help the people.