During an enrollment exam at Sword Arts Academy, Shimojou Kazuma's special ability suddenly activated towards one of the female examiners, leaving her stark naked.
Kazuma, who developed special abilities that could only be used by women, was instead forced to enroll at [Toaru Girls Academy], a place where the huge breasted elite of society attended. At Toaru, the level of a students' skills is determined by their bust size, those skills are also called [Paikokinesis].
On the other side, during that time, he had a fight with his sister which ended up with his smartphone breaking.
In order to repair it, he went to a cellphone shop that caught his attention a day before. Instead of repairing his smartphone, he ended up getting a strange new one. Upon trying it out, an app immediately caught his attention.
Tapping the app's start icon, a blinding light spread in front of him. When the light faded, there was a dreamlike scene before him: a plethora of girls -- including his childhood friend Rio -- were bathing in Toaru Academy's public bath.
Now, as if it was his destiny, with this otherworldly Super Erotic Smartphone and its Super Erotic Apps, Kazuma's life at Toaru Academy begins as he aims to conquer all of its students.
A century or more from now, all humans have acquired superpowers in this new world. These powers are such a commonplace that those who do not possess them are viewed as outcasts. Civilization has greatly declined during this time of change with the human population greatly reduced and nature reclaiming lands which had been developed.
The town of Raillore, with brick dwellings reminiscent of the Middle Ages, is surrounded by forests and rivers and blessed with fertile soil. Since the concept of countries has vanished, it is self-governed by an order of knights who fight crime to protect the townspeople.
One time, it was confirmed that there were people called ‘errors’ with unknown powers known as ‘moments’ which bring about strange phenomena. These events caused fear to the masses and it was up to the order of knights to deal with the situation after it was determined that the errors suddenly appeared due to an illness.
Hayate’s parents departed on a cruise around the world, leaving him and his three sisters Haruka, Fuyuka and Natsuki to take care of the house. He thought that these three months would pass without much problems, but his sisters decided to take advantage of the situation to draw even closer to their dear little brother.
They had once made an agreement to not make any moves on him before he became a working adult, which was reaffirmed shortly after their parents’ departure. However, Natsuki gave a daring kiss to Hayate while he was sleeping to cheer him up from the strange dreams which he had been seeing. Hayate began to see her as a woman, and this incident was seen by Haruka. Despite Natsuki’s claims of innocence, the other two sisters became increasingly impatient knowing that Natsuki was one step ahead of them. A passionate summer lies ahead for Hayate and his sisters.
It was spring, the season of new beginnings. Satoru finally broke free from the closed remote village where he had been held captive as an unwanted child, and entered the same school that his late mother attended. However, he was surprised to find his twin sister Ruri and her attendant Kyouka waiting for him there. He met the cool senpai Touko and occult-loving student council leader Mirai and gradually got used to the dormitory life. However, there were figures working in the shadows; will they find out the truth behind the events around them?
The protagonist, Ikenaga Ren returns after several years away from his hometown, returns to enroll in the Private Arimori Academy, an art school.
On the first day of school, he unexpectedly reunites with the two of his childhood friends with whom he used to paint illustrations in the past, twin Saegusa sisters Hinata and Ayame. While surprised and confused by how they have grown, he takes his time to return their relationship to how it has been in the past.
Furthermore, he meets a third year Kanno Junko who has a very strange theme running for her art, and a second year Sakurada An who is interested in stage design and subculture. Meeting these two makes his daily life speed up even more.
This is the story of how "like" turns into "love"...
