^ or either of them tries to.
It's one thing to be close to someone, which might be expressed in the ways you mentioned, but does not necessarily imply any sexual desire, and given how Koyomi sees girls (judging by the way he thinks in the novel) it is very easy to misinterpret it... of course he might be a sis-con, loli-con, meme-con afterall, but except for Hitagi and Tsubasa he has never shown any clear sexual/romantic intentions towards the rest of the cast
EDIT: Back on Kizu- I still can not get the ending of chapter 8 out of my head
ah! I have to watch your movie ASAP, Tsubasa-sama