Talk:Lilly Satou/@comment-112.208.84.132-20131126051822/@comment-24055175-20131227024732

... doing 'it' together = sex.

To be fair, Hisao's heart also acts up in Hanako's route right at the end of having sex with Hanako, but not to the extent found in Lilly's route.  So, the source of amusement is how nice and elegant Lilly is, but she unwittingly gives Hisao's heart some pretty tough times!