They go to Kaoru's hometown for a walk down memory lane.
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A run-in with an old friend leaves Kaoru wondering if she and Hajime are actually compatible. Not by blood type or astrology, anyway. Hajime shows her how to really know.
(Shoop shoop.)
I think it's hard to have serious buildup on anything over 7 minutes of runtime.
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.