Her name is Andou Riho, she is attracted to associate professor Saeki Miona, and decides to go to meet her at Ukina university's laboratory.

She pretends to be a young woman and asks for a part-time job to meet and talk with her. While having a conversation with her and having dinner, she falls asleep.

When she wakes up, she finds her body being grouped by someone in a car.

When Riho visits the lab again, she receives more money for her part-time job and is asked not to tell the police about the incident.

A few days later, Miona contacts her and said to go to the lab and asked her to do the same part-time job she did the last time.

Miona had been watching Riho for a few days, seeing that she was not enjoying her college life, and feeling that she would never forget the stimulating sex she was having by pretending to be someone she was not, she invited Riho to join her again.

Riho now fully aware of everything, accepts the part-time job and pretends to be a different woman, and meets a man via SNS…..

[From official Website]