Mu: Referring to Kasumi as a friend.
Ren: Also implying Kasumi is a friend.

lol
lmao even.

There's also the funny instance where (inversely) Hikari assumes Kasumi was preparing to defend [i]herself[/i] when Lin pulled out a knife. When really, she was actually planning to swap herself with Lin using Replacement to get him away from his "target". Averts the attack and simultaneously creates distance if things got ugly. It's probably the one outwardly altruistic thing she's almost done so far. XD