（秘）高校生の性生活

Summoned by his dying father, Miyagi returns to his homeland of Okinawa, with Daniel, after a 40-year exile. There he must confront Yukie, the love of his youth, and Sato, his former best friend turned vengeful rival. Sato is bent on a fight to the death, even if it means the destruction of their village. Daniel finds his own love in Yukia's niece, Kumiko, and his own enemy in Sato's nephew, the vicious Chozen. Now, far away from the tournaments, cheering crowds and safety of home, Daniel will face his greatest challenge ever when the cost of honor is life itself.

Saki, Anju, Chiaki, Ami, and Kaya reunite for the first time in years. The five of them excitedly decide to go Toshimaen Amusement Park, a place that was very important to them when they were younger. None of them know that they're about to enter a nightmare…

Giko Nokomura is a female student at Nightingale Academy, who carries around her very own chainsaw. One day she begins to be attacked by modified corpses created by one of her classmates, Nero Aoi . She tears her way through the corpses and busts into Nero's hideout. Why is Nero so intent on attacking Giko?! The reason will shock you!After her battle with Nero, she encounters a new enemy. It's the leader of the Nightingale Academy Student Council Guardians, Nemesis.

The life of a young, Japanese schoolgirl is destroyed when her family is killed by a Ninja-Yakuza family. Her hand cut off, she replaces it with various machines-of-death, and seeks revenge.

When 17-year-old Makoto Konno gains the ability to, quite literally, "leap" backwards through time, she immediately sets about improving her grades and preventing personal mishaps. However, she soon realises that changing the past isn't as simple as it seems, and eventually, will have to rely on her new powers to shape the future of herself and her friends.

There is a schoolgirl who carries her own personal chainsaw. She was attacked by a dead body who was created by her classmate one day. As such, she does not understand why she was attacked by a classmate. To find the answer she ventures into the enemy's base. There she finds out the reason for the assault.

Japan, 2020, a few days before the opening of the Tokyo Olympics. Although she should be studying for her final exams, Kokone, a schoolgirl who lives in a small town with her widowed father, a mysterious and talented mechanic, falls asleep often, anywhere, anytime, entering, over and over, a dream-world where a squad of fantastic motorized contraptions fights against magic, a world close to reality where she will find out the keys of her true past.

Sōra is a high school student who is basically invisible at school. He is friends with Chūya, who is an unpredictable character that often surprises those around him. Sōra and Chūya both have feelings for the same classmate, Kio Machida. The Machida girl refuses to come to class, because she doesn't want to dye her naturally brown hair black. Their school has unreasonable school rules, especially about uniforms, which include requiring all students to have black hair. Sōra and Chūya decide to stand up to change their school's black school rules so that Machida won’t have to repeat a year of school from missing too many classes.

"Won't you be my lover? Unless there are some rules..."

A tale of delinquent and lazy school girls. In their efforts to cut remedial summer math class, they end up poisoning and replacing the school's brass band.