It's been a few months since Kiyoshi quit his job to fulfill his dream of running a candy store in the outskirts of Tokyo. He wanted to live the rest of his life watching little girls. His plan was a success, with the kids from the nearby school visiting his shop every day and talking with him happily like friends. However, soon after summer vacation started, something happened with some of his customers. Thus begins his summer vacation with small girls.

The Hanabishi family and Hidaka family are next door neighbors. The fathers of both households could be called best friends, so they all get along like one big happy family. In particular, Hidaka family’s only son Kouki was raised lovingly by the four Hanabishi sisters like he was their own brother. One day, the Hanabishi and Hidaka parents were preparing for a long term overseas business trip together. Kouki ended up living together with the four sisters. And one of them is promised to him as a fiance. But who should he choose?

A cruise with only guests invited by a famous company and staff allowed on. This cruise, the Northern Light, is celebrating it’s 200th voyage, with Fujigasaki Miho’s father as the captain. Miho is invited by her best friend, Moribe Jun, to work there part time. Otowa Saki, a student working at the cruise’s restaurant, playing the violin. Kurusu Nonoka, an idol holding a handshake event on the main deck. Fujigasaki Miho and Moribe Jun, who are working at the casino as waiteresses. And Mizunashi Nadia, a dealer at the casino. We’ll have lots of fun, and it’ll be a great memory of how we spent our summer vacation… That’s what Miho thought, before she realized the nightmare that was waiting for them.

Saiki Yasuo is a 45-year-old office worker. After 20 years of marriage, his wife asked for a divorce and left him. Now, depressed, he spends the nights drinking alone, until one night a girl from the St. Marian Academy approaches him looking for a client

Ariadne just became the princess of the small country Avon. But already it's in a deep financial crisis. In an effort to save the country she declares that Avon must focus on developing their sex industry.

Spring has come to Tokyo once again, except this year you're now living alone after your parents had to leave due to work. You're renting a room at an apartment run by your aunt, who bluntly asks you, "Could it be that you're not interested in girls...?" Well, of course you are! It's just that you haven't had much luck finding someone. "Your youth is now. Go and find your love or you will regret it later." With just that little push, you feel a little confident that it's your time to fall in love. Yes, your love will begin to bloom now...

Takuma has a crush on Megumi, but is unable to confess or date her. When browsing on his phone, he comes across a hypnosis program and decides to try it. Could this be the thing to bring him closer to Megumi? Perhaps it will make her simply obey, which could be a lot of fun too...

Souichi Takasaki gained the ability to control other people’s bodies without their permission and decided to use it on the women around him. His sister in law, a classmate and a teacher, all targets of his, he trains to become his personal harem.

Newlywed couple Yuuto and Sae were supposedly enjoying their blissful honeymoon phase… or so it seemed. But suddenly, the husband Yuuto became unable to get it up anymore. The cause? His fetish is massive tits and harems. Upon learning this, his wife Sae agonized over it before finally asking her friend Emi for help. Yuto hesitated at the idea of a wife-approved threesome, but when faced with Emi—who boasts tits just as huge as Sae’s—his hardcore massive-tits-harem fetish explodes…!?