[DASS-434] If she is away on a trip for three days and saffles with the sister next door ... Mary Tachibana

She was having an affair with a friend. Hajime, who is devastated, is called out by Mary, a novelist who lives in the room next to her. - The two of them had sex as Mary told her to comfort her. In the three days between her and her return from the flirtatious trip, the distance between them rapidly shrinks. Conversation like a lover. Sex like a lover. But their worlds are separated by a door. Another life could have been possible if one choice had been different. There are as many girlfriends as there are choices, and there are countless girlfriends - Mary Tachibana, × parallel world (multiverse), finally opens.