You found an app that rents out a girlfriend for money. You try it out and you rent one. The next day, after several minutes of waiting, you felt that this app was a scam and you were about to resign yourself being forever alone and go home when suddenly a sweet voice stopped you. When you turn to see her you see a pretty girl, smiling at you.

"Hello! I'm Ruka Sarashina, nice to meet you~!