Starting from Scratch? I'll Go Black and Kill Him!

(Re0+Ai Pleiades TV+Blackening+Insanity+Succubus+Multiple heroines+if line experience+realism) When I came out of the convenience store, I felt something was wrong. I? Natsuki Subaru? Information was forcefully fed into his head, and before he could react, he had already appeared in a strange alley. A strange text appeared in front of my eyes... Main route: Please fully experience Natsuki Subaru's experience. Tip: During the process of experiencing the main route, the host's words and deeds will be modified. Note: Don't ask why, and don't think why. From now on, you are Natsuki Subaru. ... After a long time, doubtful voices came from the alley. "Who is Subaru Natsuki?"