@Baysiri, well, she had some sort of dark aura around her
the mc took it as "not looking so good", but its clearly some sort of dark aura. Doesn't mean its too dangerous, but I think it's an early hit that ghost can in fact harm people.
It is possible that mc would not be affected, I do think that it has smth to do with their "lifeforce" or whatever her friend hana is full of,
so I guess we'll have to wait and see on that