The protagonist, Ayano Taiki is a physics teacher at a high school. In school, he also acts as an advisor for the Astronomy Club which is a club consisting of only two members, sisters Aimi and Yumeno. He is living a peaceful and fulfilling life.
One day in July, Taiki is invited by the sisters to come with them to have a "training camp" in their home village they are returning to for summer vacations. Since he has no parents or relatives and as such, nothing to do, he gladly takes the sisters' invitation
When summer vacations start, he arrives at the countryside where the sisters wait, there he meets their cousins Saki and Chieri and receives a warm welcome.
This will be a great vacation, is what Taiki thought... But what awaited him, were quickly-passing days full of obscenity.
Ayato is an exorcist who works for the government. This time his mission is to investigate and destroy a supernatural object which had been brought into the sword arts school Murakumo Gakuen. With the help of his team members Hime and Ruri, he traced its location to Matsurika, the sole daughter of the head of the Swordbearing Defence Group. They were successful in destroying the object, but as a result, Matsurika became the initiator of the Spiritual Calamity. To teach her skills to fight against spirits, Ayato became a temporary mentor to her.
“No matter what, I want to stand by your side…”
What if a younger girl wants to take care of "you"?
The protagonist lives alone after getting transferred to a local city. One day, he met Hiiragi Isana, a girl who has problem with her bicycle.
As a gratitude, Isana who learned protagonist's circumstances offered to taking care of him. Thinks she said it as a courtesy and won't actually happen, the protagonist casually agreed, but...
Isana actually came to his home and taking care stuffs like meals and cleaning. Then, while playing together and taking care of Isana's study and other stuffs, the distance between them got closer and closer.
The new throbbing daily life with younger girlfriend starts.
Second year, Tsujidou Tadaomi thinks that, next year I have to prepare for entrance examination so this year, I want to make the best summer vacation memories with her.
So what kind of summer would you like to spend with her?
Do you want to lead or do you want to be lead?
The main character returned to his parents' home after university, but there is awkwardness with his family because of his long dormitory life.
He shared it with his mother's senior and neighbor, Kyoko Kawashima, but she actually wanted the protagonist to be her own son. She set up naughty skinship in form of advide to dazzle the protagonist.
However, his mother, Chikage, notices it. Kyoko then goes all in to shrink her relationship with her own son.
In addition, his tsundere's younger sister Aki and Kyoko's daughter Yuma participate in the battle, and the kinky family's skinship around the hero begins!
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.
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"...