His system's purpose is to conquer the female leads, but due to the mc's personality, it resembles more of a romantic love story. The key point is that the plot is quite good, with several characters being well-developed, at least I quite like it.
I love yanderes...........................................................................................................................................
Derek had no idea how to open the doors nor how to operate the control panels that he found along the way. He tried pushing buttons at random but nothing happened.