It''s the start of grade twelve and this year, Yamada and Kase-san are in the same class together! Yamada''s thrilled to be dating her track-star girlfriend but she''s having trouble getting a grip on just what ‘going out'' even means. Before she can find a solution to her problem, though, their school trip to Okinawa begins! Will Yamada and Kase-san ever figure this whole girlfriend thing out--or will misunderstandings split them apart forever?