10th

i think its sex

I think kissing (●'◡'●)ﾉ

Maybe not, because they're already done that and it being the 10th haven't been mentioned. I think that maybe the 10th could be him meeting his father again and hug him or something, he hasn't touched him since he was young after all.

Kurose asked Shiro if the tenth thing was sex and he said "that's not it." So I don't think. Though I'm not sure.

yup i relised after i clicked on the post button :P