Yüto and Haruka attend the summer Comiket together at the Tokyo Big Sight, but they underestimate the massive scale of the event and the hordes of people who attend. Mika, Hazuki, and Nanami tag along in disguise and help Haruka obtain a döjinshi that she wanted, and get her out of trouble when people mistake her for cosplayer and start taking pictures of her. Later that evening after Yüto escorts Haruka home, Mika asks Yüto if he and Haruka noticed anyone suspicious at the convention. Later that night, a frantic Haruka shows up at Yüto's house unexpectedly.