Yohei Sasaki

In an alternative feudal Japan, a strange disease that only affects males caused a massive population reduction, leaving females to fill the vacant jobs, therefore changing the social structure. Now, 80 years after the initial outbreak with a 1:4 male:female ratio, Japan is a completely matriarchal society. Females hold all important political positions, and males are their consorts. Only the most powerful female—head of Tokugawa shogunate—may keep a harem of handsome and unproductive males, known as "Ōoku".

Yoichi plays basketball at his junior high and is capable. He is granted a scholarship and attends a high school with a superlative basket team. Instead of welcoming the boy the students there decide to bully and harass the new player leading Yoichi to a new high school and basketball team. Expectedly, the basketball team is not the best. The team will have to soon play against the team from the school Yoichi was in before.

Ryōsuke Yoshii, an ordinary reseller, carelessly earns grudges by people and becomes entangled in a life-threatening struggle.

After dying in a bus crash and falling to hell, high schooler Daisuke joins a demonic rock band so he can be reincarnated back into the mortal world.

Shinichi, Tatsuya and Makoto live in a provincial town. They are all friends and 25-years-old. Even though they only think about women and sex, they are all still virgins. To change their lives, they set up a plan to have sex.

In an alternative feudal Japan, a strange disease that only affects males caused a massive population reduction, leaving females to fill the vacant jobs, therefore changing the social structure. Now, 80 years after the initial outbreak with a 1:4 male:female ratio, Japan is a completely matriarchal society. Females hold all important political positions, and males are their consorts. Only the most powerful female—head of Tokugawa shogunate—may keep a harem of handsome and unproductive males, known as "Ōoku".