I know everyone thinks that "boy walks in on the girl while bathing" trope is a staple in any harem series but this time it served a difference purpose from what I saw.
Keima's interest in 3D girls is non-existent. He can even walk in on Haqua without getting embarrassed or even reacting in any way. Haqua on the other hand..
Also, I finally got to see Shiori again! And I'm sure it won't be the last time I'll see her
EDIT: I also notice that they should've added a tagline with the title of this season:
KamiNomi Megami-hen: Itsu noto gemu enimoru