What? You Said This is a 3D City Tour?

Good news: I've traveled through time, and now I have a beautiful, mature, and impressively shaped journalist mother who loves black stockings. I have an older sister who's a model with a slim waist, long legs, a delicate face, and 36D breasts who loves black stockings. I have a lively, cute, youthful, and beautiful younger sister who loves to wear a sailor suit and white stockings and is always clingy. I have a coquettish, charming, and teasing aunt who's a teacher in stunning black stockings. And before his death, my father left me a set of magical secrets that allow me to see the feelings and locations of women I've been involved with, as well as some very "interesting" abilities. Doesn't this start out familiar? Yes, the bad news is that the world he's in seems to be a city where you can easily become corrupted. Luckily, as a time traveler, he also has a hack for the ubiquitous system. So, I'll—Awesome! (This isn't fan fiction, because many heroines in this type of game start out badly, like the famous "Mou Chao" (a certain nest). To avoid any offence, I'm not going to make a fanfiction, just borrowing the setting.)