Hachimitsu Academy, a prestigious, historically all-girls school, has finally become co-ed. Average teen, Kiyoshi, is one of five boys to enroll. What he doesn’t know is that the school is clandestinely ruled by an Underground Student Council of ruthless, cruel, totally hot female students! And when the boys get caught peeping, they’re sent to the school’s prison, which is run by the brutally seductive warden, who also happens to be the VP of the Underground Student Council. After the boys are forced endure manual labor, whips, and chains, they’ll be left wishing they were locked up with actual criminals! Make sure to check back later today, because I still have more for you!!!

[Source: Crunchyroll]

Ganta is the only survivor after a mysterious man in red slaughters a classroom full of teenagers. He's framed for the carnage, sentenced to die, and locked away in the most twisted prison ever built: Deadman Wonderland. And then it gets worse.

At Deadman Wonderland, convicts are forced into brutal deathmatches for the amusement of the masses, the cheers of the crowd drowning out the screams of the dismembered. Even when Ganta befriends Shiro, an unusual female inmate, his dark fate crushes all hope —until he discovers the strange ability to wield his spilled blood as a weapon. Ganta learns his new skill might be related to the murderous man in red and uncovers disturbing secrets that could expose those who stole his freedom. He's determined to see justice served —but first he'll have to fight for his life in a prison that holds a million ways to die.

[Source: FUNimation]

Florida, U.S.A, 2011—

After an accident while on a drive with her sweetheart, Jolyne Cujoh falls into a trap and is sentenced to fifteen years at the state-run maximum-security correctional facility Green Dolphin Street Prison—AKA "the Aquarium." On the verge of despair, she receives a pendant from her father that causes a mysterious power to awaken inside of her.

"There are things in this world that are more terrifying than death, and what's happening in this prison is definitely one of them."

A message from a mysterious boy who appears before Jolyne, inexplicable events that occur one after another, the horrifying truth told to her by her father when he comes to visit, and the name DIO… Will Jolyne ultimately be set free from this stone ocean they call a prison? The final battle to end the century-long, fateful confrontations between the Joestar family and DIO begins!!

[Source: Netflix]

Welcome to Nanba, the world’s largest, most impenetrable prison. Locked away in cell block 13 are four inmates who provide more than enough trouble for Officer Hajime. Between attempted breakouts, gambling, and general misbehaving, these four believe that just because they’re in prison doesn’t mean they can’t have fun! Follow the hijinks of Jyugo, Uno, Rock, and Niko as they pass time behind bars.

[Source: Funimation]

Adaptation of the Mad Max arc of the manga.

Welcome to Nanba, the world's largest, most impenetrable prison. Locked away in cell block 13 are four inmates who provide more than enough trouble for Officer Hajime. Between attempted breakouts, gambling, and general misbehaving, these four believe that just because they're in prison doesn't mean they can't have fun! Follow the hijinks of Jyugo, Uno, Rock, and Nico as they pass time behind bars.

[Source: Funimation]

Around 10 years after World War II, a group of delinquents are sent to the Shounan Special Reform School. Upon arrival they meet Sakuragi Ryouta who becomes their guide to adulthood. Depending on each other to survive the brutal conditions at the facility they make a promise to one day all meet up on the outside.

[Source: AniDB]

Kiyomasa Senji was a policeman before he was arrested and imprisoned in Deadman Wonderland. His abilities during his time as an officer caught the eyes of a gang that wishes to recruit him.

[Source: Anime News Network]

Previously unreleased anime special that will screen at "Nanfes."

In Tokyo, left on his own after the loss of his mother and jobless, a series of bad decisions and misfortune lands young Reito in prison. Left with nothing, he has lost all hope for the future. But everything changes when a lawyer representing a powerful family empire offers him a way out - on one condition: he must take on a mysterious role as the Keeper of the Camphor Tree.

"What a pathetic life it’s been"
An elderly inmate serving a life sentence awaits a lonely death in his solitary cell—until a voice calls out to him.
It belongs to a balsam flower, Housenka, that speaks like a human.
Through their "conversation," the old man begins to reflect on the life he’s led.

[Source: Anime PONY CANYON]