No friends, daily beatings by bullies and even his parents have given up on Ryouichi. However, his life changes one day when a new girl transfers into his class. Chihiro is an old childhood friend, and she remembers Ryouichi. She is unaware that he has suffered brain damage from an injury he suffered while they were playing as children. Riddled with guilt, she offers to do anything for him. Taking advantage of the situation, Ryouichi demands sex from her. Her conscience does not allow Chihiro to back out, and she agrees. Ryouichi quickly learns that he is infallible in bed, that he has a secret weapon. After years of abuse at the hands of his classmates, he only has one purpose... Revenge. He sets out on a carnal, perverse journey to turn all the women that disdained him into his personal sex slaves...

As she's been taken prisoner by the main character and her childhood friend, Eric, the battle princess Lotte has ended up training to be a slave maid princess made in order to prolong her life. Slave Maids are specially trained maids which exist for the pleasure of the noblemen. While providing sexual services, they also live by working as bodyguards who put their lives on the line for the protection of their masters, making them very valuable to both royalty and noblemen. The battle princess Lotte loses her virginity and must endure dirty and degrading training in order to turn her whole body into a sex toy.

Taken prisoner by the main character, battle princess Lotte has ended training to be a slave made in order to prolong her life. Slave maids are specially trained maids traded among the noblemen. While providing sexual services, they also live by working as guards who put their lives on the line for the protection of their masters, making them very valued to both royalty and noblemen. The battle princess loses her virginity and has to endure dirty and degrading training in order to turn her whole body into a sex toy.

Stringendo: Angel-tachi no Private Lesson 12 closes out the season with two high-pressure situations where emotions and timing collide.

In the first story, Tomohisa spends the day with senior Mizuho, who has run away from home and is searching for an escape. The two find temporary refuge in a karaoke room, where emotions run high and the moment feels electric—but their time is cut short before anything can truly settle. As they leave, fate throws an unexpected obstacle in their path when a familiar car appears outside, forcing them into a tense decision. With frustration and desire unresolved, the situation shifts into an even more confined and dangerous setting, where emotions threaten to spill over.

The second story follows Mr. Mikura, who is asked by the photography club to serve as a model. An after-school photo shoot in the art room quickly turns intense as she enthusiastically embraces the role. Endo, asked to assist, finds himself stuck nearby, witnessing far more than he expected while trying to stay unnoticed. As poses become bolder and the atmosphere grows heavier, the line between a simple shoot and something far more personal begins to blur.

Packed with close calls, emotional tension, and risky situations, Episode 12 brings the series to a provocative and suspenseful stopping point.

Hatsune is enjoying her vacation on a cruise. She was brought by Sensei, who she hasn’t had to herself for a while. Tolerating the embarrassment, she shows off her excellent body with a skimpy bikini that Sensei told her to put on. She was filled with joy after Sensei expressed his want for her to make friends with those of her age as he fucked her with his rod that stuck out from his swimsuit.

On the other hand, there is the cheeky model magazine that makes her manager/teacher quell her body whenever she gets hot. She complains to him saying “Why do I have to look after the exchange student?” but is easily coaxed into doing what he says… Simple as ever, Shizuka ends up meeting with Hatsune who has come to her school. Dumbfounded on how someone could look like a princess straight out of a story, Shizuka gets all buddy with Hatsune saying that she would love to meet her father who is a legislator. Thinking to herself that using her weapons as a high school girl would be more than enough for some legislator, she goes to visit Hatsune and the legislator, but…

Shinji Yagami had always heard the rumors about female students being raped on campus - everyone did. Of course he never believed them until the day he stumbled across a website showing detailed pictures of female students being assaulted in the classrooms. Shocked to find himself turned on by what he sees, Shinji begins his descent into a world of voyeurism, S&M, and rape guided by fellow sadist Satoshi Kojima. When Shinji's childhood friend Miku Iino begins to suspect that he may be involved with the string of campus rapes, she decides to confront him. Torn between his own dark desires and the horror of his crimes, will Shinji continue to hide his secret from Miku, or will she become the next target of his vicious desires?

Yuuji was given a board game as a sample from a salesman on his way home. This game turns out to be magical and forces its players to do things they would never do.

There is a strange epidemic running rampant at the local inpatient hospital. For some reason every night the nurses are feeling an uncontrollable urge. They have no choice but to satisfy it with the patients, the doctors, and even each other. The new resident doctor has his own itch to scratch, as well as a suspicion that someone is behind this impromptu sex ring.

The story begins with a pair of young lovers, the busty Mizuho-chan, and the well endowed Hiro-kun. One night Hiro suggests that Mizuho should try swimming to get in shape. He even offers to coach her after hours at the pool where he works since she can't swim very well. Mizuho's new workout plan turns out to be much more exciting than expected... Meanwhile Takuya-kun finds himself in a compromising situation with his clumsy but beautiful neighbor Sayaka-chan... Each episode features couples enjoying various sexual escapades involving plenty of water, wet bodies, & extremely revealing mizugi (swimsuits).

He's had both his original target AND her friend... so why not both at once?

Based on a game by Mink's M no Violet division.

Before Ren Nanase was ever a night shift nurse, she was a sexy coed at a nursing school. Hearing rumors that one of the faculty is a rapist, she does exactly what any model citizen would do and confronts him about it. Unfortunately, things go downhill from there, and she winds up being his sex slave, getting a crash course in depravity. But in the middle of that perversion, could there be a hint of purity?

As she's been taken prisoner by the main character and her childhood friend, Eric, the battle princess Lotte has ended up training to be a slave maid princess made in order to prolong her life. Slave Maids are specially trained maids which exist for the pleasure of the noblemen. While providing sexual services, they also live by working as bodyguards who put their lives on the line for the protection of their masters, making them very valuable to both royalty and noblemen. The battle princess Lotte loses her virginity and must endure dirty and degrading training in order to turn her whole body into a sex toy.

Taken prisoner by the main character, battle princess Lotte has ended training to be a slave made in order to prolong her life. Slave maids are specially trained maids traded among the noblemen. While providing sexual services, they also live by working as guards who put their lives on the line for the protection of their masters, making them very valued to both royalty and noblemen. The battle princess loses her virginity and has to endure dirty and degrading training in order to turn her whole body into a sex toy.

Tomohisa and Endou aren't either so handsome or ugly; they are just normal boy students. They're looking at Mizuho, the senior student, and Mikura, their classmate. Mizuho is a returnee student, and she attracts all the students by her beauty. Mizuho notices their eyes, and she gives Tomohisa a suggestive look. One day, Tomohisa finds a note in his desk. It says, "I'm waiting in the ladies' room on the third floor". He goes there and finds Mizuho is waiting for him... The next day, Tomohisa can't help recalling the event the day before. He happens to find that Endou is gone, and also Mikura, whom he loves secretly, is missing, too. He's afraid that they're doing things. However, exactly, they're doing things on the fire escape.

The second episode is about Makoto and his step-sister Misaki (who is about as tsundere as you can get). Misaki secretly has feelings for Makoto and one day is accidentally caught by him while masturbating in his room. Despite Misaki being an extreme tsundere, they finally both convey their feelings to each and have sex.

Those who are at the top of a zaibatsu, a large Japanese business conglomerate, tend to have eccentric tastes. For one particular executive, his hobby of choice is spending his fortune on women, buying sex slaves naturally. At his luxurious mansion in the most remote of locations, he spends his time training his pets far from prying eyes. An acquaintance of his shares the same pastime, and the two one day decide to compete to see who can train the best sexual servants. At the same time, an amnesiac young lady shows up at the doorstep, not realizing what awaits as the game begins.

Based on the game by Black Rainbow.

Murakoshi Shinta is an extraordinary student at an ordinary high school. Every student hates him, also teachers and parents hate him. His life is in despair.... One day, he receives a gift from his internet friend Mr.K. It is a hypnotic machine....

Sora was lying in front of a hospital. He was seriously injured, and when he was about to die, a nurse, Yagami Yuu, helped him.

He was sent into an emergency ward, and he met a beautiful woman, Mikage Reika. She was a director of the hospital, and she asked him to become a test subject. Because he didn’t have any relatives, he accepted it. Then, Yagami Yuu was supposed to take care of him.

Since that day, his fate had changed a lot.

Sora was lying in front of a hospital. He was seriously injured, and when he was about to die, a nurse, Yagami Yuu, helped him.

He was sent into an emergency ward, and he met a beautiful woman, Mikage Reika. She was a director of the hospital, and she asked him to become a test subject. Because he didn’t have any relatives, he accepted it. Then, Yagami Yuu was supposed to take care of him.

Since that day, his fate had changed a lot.

Based on a game by Guilty.

Kaoru is a high school student. He has an old friend, Nanao, at the same school. She has been giving him sexually insulting orders in front of other students and he has always obeyed it. But one day, his patience runs out and decides to take revenge on her. While he still plans how to do it, he accidentally witnesses Mayu, his classmate, shoplifting. He makes up his mind to use Mayu as his pawn.

Teen-aged (and well endowed) school girls getting raped - by their teachers (the first episode), by some businessmen who mistake the girl for a hooker (the second episode), by a classmate in mad love with the girl (third episode) and finally two sisters being raped by the school janitor.