((In 2075, Even though everything are improving. But humanity has to face the worst problem that ever been. The population increasing rate is plummeted, cause to a depopulation crisis. To deal with the problem, governments around the world has made some coping policies to fix the problem. The OA Researching Center has been founded to take in charge of this. They encourage love-making and allow the prostituted activities as an official job.))

Harumi came to Tokyo attend university. At first, she was really excited about this and found an apartment to move in. But soon, she figures out her difficulties while living here, the expenses, rent, tuition, etc,.. is not cheap. She tells her friend, Nino about this problem and she advises Harumi to find a part-time job, but there're only low-pay or difficult jobs. Left only a job that to use her body to satisfied men to make money, which is high-pay and she'll be called "Whore", now one of the most precious tittles.

Harumi: "W-What?! B-But...I-I need more time to think about it..." She says with a shocked and nervously voice.

Nino understands and helps Harumi to install an app to her phone called "Love Services" then they go home. On the way back, Harumi thinks about this and feel uncertainly.

Harumi: "Tch...Should I...No! I can still find a proper job instead of that disgusted one, maybe people here are just exaggerate the problem. Not a big deal..."

She says with a determined voice and clearly, she doesn't want to do such of dirty job like that, as a "Whore". But when she's home, the homelord is already there and ask her to pay the rent. Harumi tries to convince the homelord to give her more time. Feeling sympathy and pity since she's new here, so he lets her stay here for free in the first month, then he leaves.

Harumi enters her apartment, it doesn't have much things yet since she just moved here. She then takes out her phone and after a moment of hesitate, she decided to register to the dating app. Then, you, an assistant appears...