Episode 16
The tenants of Hinata Inn are working part-time at a beach tea house and decide to perform a play to increase revenue. Keitaro is still incredibly glum about the whole Seta and Naru situation but it's pretty understandable.

Episode 17
Naru becomes possessed by an evil spirit and Motoko is the only one who can destroy it. Unfortunately, she doesn't know the technique to kill the spirit without killing the body and it's quite a predicament.

Episode 18
Seta has to leave on an excavation trip and asks if Sara can stay with the girls at the inn. Sara doesn't take too kindly to this and decides to run away while causing as much trouble as she can to everybody else.