Summer is here...and that means beaches, fireworks, and festivals! But Arisa's fun in the sun is short-lived when she makes a fool of herself after meeting her idol, Natsuna, and being mesmerized by her beauty. And Kosuke, feeling unworthy of such a sexy wife, tries to change things up with a whole new hairdo-one he's embarrassed to go home with just days before they visit her parents in Fukuoka. Except, once they get together, there're bigger problems than hair-like, why is Natsuna being so rude toward her mother?