A Prison Called Fate

Fantasy

Saving a friend is a good thing, right? Is the right thing for the world the right thing for you? Are you prepared. . . to be a villain?

Prison Lab

Horror Psychological

A victim of endless bullying, Aito Eyama is plagued by his classmates' constant taunts and beatings. However, through a fortuitous turn of events, he receives a strange invitations for the "Captivity Game," where victory promises unbelievable wealth. To participate, he must accept the role of captor and choose one victim to imprison for a month. For Eyama, the only choice is Aya Kirishima, the ringleader of his bullies and the source of all his suffering. The rules of the game are simple: the jailer may do whatever they please with their inmate barring murder; but in order to win the game, the captor's identity must remain hidden. Exemption from the law, an isolated cell, and the funds to purchase supplies—all the necessary tools are provided. As Eyama administers his sadistic revenge and "divine" retribution, he encounters other captors, each with their own hidden agendas. Meanwhile, Aya refuses to be a compliant prisoner and will go to any length to escape captivity. However, her endeavors threaten to awaken a darkness buried inside Eyama that craves to be unleashed. [Written by MAL Rewrite]

Prison Hearts

Shoujo

Prison Princess

Comedy Fantasy Shounen

The demonic overlord has been revived, and kidnapped the beautiful Princess Sina. An army of the world's finest knights has been sent to his castle to rescue her, but Sina refuses to be a mere damsel in distress and decides to break free on her own.

Love Lab

Comedy Romance School

The Fujisaki Girls Academy is known for their school body being composed of very proper students. The most prominent one of them is Maki, the student president who is admired by her classmates for her calm and polite demeanor. On the other hand, Kurahashi Riko is also admired but for having a very forward and boyish personality. Riko accidentally walks into Maki while she's practicing kissing with a pillow and learns that she isn't what everyone thinks she is. Riko is forced into keeping Maki's secret and join her in practicing all aspects of romance like holding hands and more. (Source: MangaHelpers)

556 lab

Fantasy Shoujo

As Kokoro discovers the secret laboratory of her late father, a new world full of wonders is opened up. Some of the inventions prove exceedingly useful.

Oniichan Lab.

Romance Shoujo

Ikezawa Sumire's 3 elder brothers, Asagi, Ai, Kon are so beautiful even friends get jealous! Sumire too loves Asagi and Ai, but for some reason she just can't like Kon. That reason is...!? Elder brother X3 + younger sister= HAPPY & SWEET!? Sumire and her elder brothers' full of happiness "at home" comedy. (Source: ShoujoLove)

Kyokutou Prison

School Shoujo

A high school for the scum of society. The school is a final test of whether the students can become functioning members of society (i.e. not criminals). Upon arriving, the students are given a score based on prior wrongdoings. By behaving properly, the students can gain extra points, while wrongdoings will lower their scores. Students who get 100 are deemed conformed and “graduate”. Students who end up with 0 points are ruled unfit for society, and they’re deprived their right to be come adults. (Source: Iskultrip Scans)

Prison Town e Youkoso!

Shoujo Ai

Frame Arms Girl: Lab Days

Mecha Sci-Fi Slice of Life

This manga follows Gourai, a newly activated Frame Arms Girl at Factory Advance as a test for self aware AI alongside several other FA Girls. (Source: MU)

Anime Prison School wo Tsukutta Otoko-tachi

Comedy Seinen

Hanamura's manga charts how the anime Prison School came together under the helm of director "Crazy Boy" Tsutomu Mizushima, and shows the production committee's raucous discussions over important details like the color of Meiko's panties or the sound effects in Gakuto's defecation scene. The anime's main voice actors—Hiroshi Kamiya, Katsuyuki Konishi, Kenichi Suzumura, Daisuke Namikawa, and Kazuyuki Okitsu—also play supporting roles. (Source: ANN)