"Nozomi Hayakawa" moved to an apartment due to her parents' divorce.

She's got a modest appearance and an air of absent-mindedness about her, but she's a member of the Tennis club who's already competed at the national level. But even a player of her caliber has a problem: the balance between her studies and her club activities.

As the days go by, she puts more and more hours into her club activities, but on the other hand, her grades have also begun to slip, little by little.

In the midst of all that, at the apartment she and her mother moved into, the man living next door happened to be a teacher, and so he started coming over during his free time to help Nozomi with her studies.

Besides being a school teacher, the man also had experience in advising a tennis club at the school he works at. Because of this, the Hayakawa mother and daughter started becoming less reserved around him, and he steadily gained more opportunities to watch over Nozomi's progress.

And so, one day.
Her mother had to go to work on what was a day off, and this became an instance when Nozomi was alone with the man. Under the pretext of giving advice, he made a suggestion to Nozomi on how to greatly improve her concentration, supposedly to help her study much faster.

A "Hypnosis Set-up Video" was being shown on the laptop he handed over to her.

Nozomi continued watching the video without realizing anything...
From there, it was becoming clear that this was all about her constitution and her body.
The man had started it all for the sake of turning Nozomi into his ideal cocksleeve.

(Source: FANZA, translated)

Note: A live-action AV adaptation (MIMK-187) was released on January 21th, 2025.