When Rina-chan lands a gig as a stand-in idol for a local festival, Mifune-kun brushes it off…until she steals the spotlight on stage. But now that she's gained a bunch of new fans, Mifune-kun's the one feeling jealous! Meanwhile, Kenta can't get enough of the new café-or more specifically, the cute barista behind the counter. But with each visit to see his caffeinated crush, he risks stirring up trouble back home.