Does Kaoru have a hobby? Is bowling a hobby? She has her own ball and everything. Certainly makes for a good outing with all the couples.
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Youta wants to go professional with his manga. Kaoru gets him an assistantship with an old classmate.
I think it's hard to have serious buildup on anything over 7 minutes of runtime.
One of the other couples gets a flashback episode of how they got together.
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Hajime goes to comiket. Kaoru reconnects with her girlfriends.
Does absence make the heart grow fonder? It looks like yes.