Mei has attracted the attention of one Kakeru Hayakawa, a guy known to have slept with many other girls, including Aiko. He then wastes no time in asking Yamato if he can hook him up with Mei for lunch with him. Yamato is unaware that Kakeru has other plans for Mei. When Yamato was distracted by a phone call, he tried to convince her to be his girlfriend, but Mei sensed his motives and leaves him alone in an instant. Yamato learns of what happened, and when Kakeru starts badmouthing Mei, he punched him, saying she is his girlfriend. Later, Yamato catches up with Mei, and confesses to her that he did sleep with Aiko, but only because back then she was heartbroken and lost.