Ichigo, you're so frank...Our friendship is pretty strong.W...what are you saying all of a sudden!?This is interesting.Owww!Well, uh... We have known each other since childhood, so......n?Ritsu, you idiot!Akiyama, do you like Tainaka that much?Right... Mio-sha...No objections. Proceed.Grow up, you two.
Literally "Become aldults" which can mean "have sex with each other already"