I was not expecting that seductive (?) Iino look.
Yeah, now that they're finally together, Kaguya and Miyuki can finally dish out some properly healthy advice. Feelings are what build into the relationship, not some arbitrary technique-though as a man, I can feel the insecurity the boys are feeling so hard it hurts.
That said, I think it's also worth mentioning that trying to improve yourself to appeal to someone you like or are dating is also perfectly normal.