That opening gave me an anti-boner, I know it's fanservice as we're already established Kanade masturbating whenever she has a chance, but for me it's an instant turn off.
Ayumi probably told Kanade they're going to the pool instead of an amusement park, why isn't he informing Haruka about his student actions, he is innocent and there's a very fucked up person who is looming over their child...
Thanks for the scanlation!