Automated search crawlers often combine metadata from different titles. The original series has 6 episodes; the sequel has 4 episodes. An algorithm could easily merge this data into a single, non-existent “12-episode” entry.
Every interaction with Hitomi fuels Nanashi's sexual fantasies, and he begins developing a fetish for married women. One day, by chance, he spies on his neighbor from the balcony while she undresses. The very next day, Hitomi confronts him about the incident—but rather than ending in disaster, this confrontation unexpectedly leads them to form an indecent "sex-friend" relationship. boku ni sexfriend ga dekita riyuu ep12 of 4 updated
The adult anime series Boku ni Harem Sexfriend ga Dekita Riyuu boku ni sexfriend ga dekita riyuu ep12 of 4 updated