It's summer vacation again and the couple are headed for off to visit Naoki's grandfather and cousins. Ever eager to make a good impression, Kotoko manages to yet again embroil herself into a situation. just what will Naoki's relatives make of her, and what will Naoki have to say about her latest misadventure? it's a laugh aminute with hapless heroine Kotoko and her true love, Naoki, in the sensational hit romantic comedy by Kaoru tada.