Santa Catalina Gakuen

It was a sudden confession. Kento’s classmate Aoi was like an unattainable flower whom he could only watch from afar. Now, Aoi stood in front of him in the classroom at night. “I love you! Please go out with me!” He couldn’t imagine that it would finally be his turn to get a girlfriend. He was convinced that he wasn’t that popular and it must be a punishment game, he ran away in confusion.

The next morning, the principal made an abrupt revelation: the school was actually a boys’ school! The cute kouhai in his club. The pretty, but delinquent-like senpai. Yes, that ‘girl’ who confessed to him last night too. They’re all guys!

Prestigious all-girls school called Saint Orkis Academy was founded by the wealthy Azuma family. Although it was recently made co-educational, it still maintains its reputation as a top school. The academy is currently led by the daughter of the Azuma family's head. However, a new threat emerges in the form of the Nishiki family, a rising conglomerate that secretly trains and sells sex slaves to gain power and influence in the political and economic spheres. The Nishiki family sends a young and skilled female trainer named Kuga Kei to infiltrate the academy and take down the Azuma family. The Azuma family, unaware of his true identity, accepts him as a transfer student into the academy.

Protagonist: Majime Masato, is an ordinary pervy 2nd Year High School student at Ichisakura Academy (he is famous among the girls… not for good reasons, he has been nicknamed "Pervert Hajime" by them).
One day, he is bestowed with a “Smartphone of Ero-love”. From being a mere Pervy student, he changed jobs and leveled up to transform into the strongest student!
Ichisakura Academy is ranked within one of Top Three Academies in the whole nation to be well served with breasts; there’s no shortage of erotic women to choose from!
- Get to the Girl’s locker-room in just 3 seconds by pressing a button! [Anywhere Girl’s Locker-room Door] App!
- Get a girl to stroke your penis in a very erotic way [Dick stroke stroke] App!
- Absolute molester success rate of 100% [Molest this] App!
To the nice childhood friend, use the Shameless App in order to deepen her skinship with Majime! Go nag the strict Public Morals Committee President by starting the Sex Education App!
Many pervy situations come into play with the Ero-apps!
So, Majime Masato…
Will you be able to conquer and impregnate all girls with your Ero-apps?

The protagonist, who loves boobs and bunny girls, is the head of the App Development Club. It has been secretly and casually developing a bishoujo game—an adult game—titled "Welcome to Impregnation Isekai Oppai Bunny Academy! (Tentative Title)" under the guise of a legitimate club activity. (Officially, the club pretends to be a wholesome extracurricular group, but in reality, it is nothing more than a "Bishoujo Game Development Club".) However, on Usaki Academy's parents' day event, while debugging the game, the protagonist is suddenly transported into the alternate world of the very erotic game he had been developing!

The world he was transported to was Yggdrasil, the world setting of the bishoujo game the club was developing. Every student, teacher, and even the school director had spectacularly huge breasts—and on top of that, they were all bunny girls! It was truly a bunny girl academy so stimulating that it made his lower half feel like hopping with excitement!

It was later revealed that his transportation to this world was actually a summoning performed by the academy. The protagonist was hailed as the Legendary Great Teacher, tasked with saving the school, which was on the verge of shutting down due to a decline in its low bunny deviation score. As the academy's director performed a skill search on him, at that moment—his 'Ultra-Lewd Education Skill' activated!

The director's erotic body was soon "educated” through sex! Success! In addition, it turns out that the semen ejaculated inside the director's body had also dramatically increased her bunny deviation and skill level! This will save the school from a low bunny deviation! As you look at the bunny students with huge breasts and their mothers, your lewd ambition grows even more in your lower body. With this dirty education skill power, can you conquer and sexually subjugate the school...... or even the other world entirely?

The protagonist's lower body is inflamed with ambition for perverse sexual uniforms and mother-daughter sexual relations in this otherworldly academy. "I'm going to give the students and mothers of this 'Oppai Bunny Academy' a perverted education!" Your ambition for oppai bunny girls begins now!

The protagonist had two secrets:One was that he was an extreme boob lover, and the other was that he is actually a descendant of ninjas.
One day, when he opened an old scroll left behind by his late father,
he was transported to another world along with his step-sister (who has massive boobs) and his step-mother (also massive boobs)!
He ended up in a dream-like “Boob Spy Academy” where everyone, from students and teachers to even the school’s principal, was a spy and had massive boobs!
The Spy Academy was divided into three classes based on individual skills, and the students spent their days training hard and competing against one another. After falling into the dormitory bath, the protagonist found himself in a real bind, chased around by the busty spy students (who were completely naked).
Just as he thought he was saved by the principal’s arrival, he was immediately assigned a certain “mission.”
"Could you please track down the enemy spy who has infiltrated this Spy Academy?"
It turns out an enemy spy has infiltrated the academy, and the principal was at a loss.
Apparently, the boy who came from another world possesses special skills and is destined to save the academy from this crisis. At that moment, the “Perverted Mission Skill” activates! A mission that makes the principal go wild is triggered! After the protagonist successfully completes the perverted mission, the principal becomes convinced that he is the academy’s savior.
Using this skill, he must conduct a lewd investigation of the busty spy students who wield influence over the academy, and their mothers! The busty spies he targets aren’t easy to deal with; they’re after the information the protagonist brought from another world. A lewd espionage battle against these busty spies, each with their own quirks, and the honey traps that come at him! Use your super-lewd mission skills to track down enemy spies and, at the same time, subjugate the Spy Academy with lewdness!
"I’m gonna use my lewd skills to investigate the busty spy students and their moms,
and strip them naked!"
The protagonist’s cock-tastic mission, undertaken as a secret assignment, is about to begin!