Domestic Girlfriend Episode 2 continues to surprise as it avoids being as trashy as I expected from the synopsis. This episode spends a lot of time building a rapport between Rui and Natsuo with fairly solid results.
Realising he wouldn't get to date the girl he liked (his teacher), Natsuo ends up hooking up with a girl at a mixer. Next thing he knows both his teacher and the girl he had a one night stand with are going to be his sisters. Well, it worked for the Brady Bunch.