He majored in psychology in college, He uses the “results” of his research to destroy those around him, He was kicked out of the university and became a criminal.

He decides to hide out in the dormitory of a shipping company in a country town. He is thinking of quitting the shipping company as soon as possible,

Miki Namatame joins the company. She becomes his delivery partner, but she is taciturn and rude to Kenichi. He is frustrated and feels the desire to subdue Miki, so he uses his “hidden research ‘results’” hypnotic device to play with her body as he pleases.

In the process, he learns of her hidden secrets and traumas of the past. Using this, he will be able to enjoy more and more. Thus begins a day of hypnosis and pleasure. But the end result is something even Kenichi can't predict.

[From official site]