Gongnyang Bulga Romance

Oh Kyung-Tae, who is gentle and likes children, but is always bullied by the girls around him. One day, Kyung-Tae is chosen as a beta tester for a dating simulation game for pretty girls. However, the joy is short-lived. The game does not run or install properly, so he ends up thinking it is a bad game... All the girls around him start to show favoritism! And he even starts to show favoritism toward Min Ji-Ah, the queen bee of the same university who has bullied him since his school days...

(Source: BookCube, translated)