Yup! Watch it fall off him like he's not there.

That's very convenient.

Can he go fully invisible? Can he partially through something and then "go solid" again? What does it feel like to be e.g. entirely inside a tree?

Yes he can, if he tries to do that his body starts trying to push him away from the thing and/or the thing away from him, and it doesn't feel like much of anything except it completely blocks his visible if his eyes are covered by the thing. But also, re. that last bit, it feels like he can do something more than just hide inside the tree; it feels like he can... fuse with it, somewhat?

Fuse with it, like... haunt it? Possess it?

Yeah, pretty much.

What does that... get him. Can he become a moving tree or something?

No but he can kind of sway its branches and leaves a little bit. Also it feels like he can maybe... influence it in other ways? Make it... healthier, or something? It's a weird intuition. And he can also make it worse.

No, he's a good guy, he'll try to make it better.

There isn't an immediately noticeable effect, except Peter feels tired all of a sudden. Or, well, something that's like feeling tired, except it's tired elsewhere, not in his body or mind.

It's probably some kind of mana or something like that. Ghostly energy? Hmm.

Anyway, what was that about "types of ghost" he could be? Does he have any more insight into that particular intuition, now?

Yeah. It seems like doing the nice thing to the tree is one of the types of ghost he can be. And doing the not-nice thing would be the other kind. He can look within him and try to nourish one kind or the other. Or neither, too.

The kinds are... nice and mean? Seriously?

Yup!

That's basic af. But it does explain what the girl told him earlier, about ghosts sometimes just being Like That™, if there's literally Like That™-themed magic powers you can get as a ghost.

Well, what happens, then, if he looks within and tries to nourish being the nice type of ghost?

There are things he can do! He can develop an ability to sense and improve people's moods, it seems, or just something like what he did to the tree and make things generally better.

Ooh improving people's moods is good, he likes that.

Done!

Okay! He is happy with this decision.

—wait, he just remembered that Kai and the other ghosts were wearing clothes and their clothes were similarly ghostly. If Peter tries putting clothes on, do they become ghostly, too?

Yup. They also feel, to his skin, just like real clothes used to.

Hm. And if he takes his shirt off the normal(?) way, does it unghost or is it still ghostly?

That seems to be... up to him, apparently? Except if he stops touching it and like leaves it somewhere it goes unghostly.

What a weird way for it to work. Does that mean he can partially ghostify other things?

Apparently! And then they feel normal to touch. But also that does seem to pull on the same "tiring" thing from earlier.

Interesting.

Okay, next test: can he fly?

Hmmmmmmmm kind of? He can hover, and making his legs partially invisible/nonexistent makes that easier, and if he makes himself interact less with the world that becomes easier and easier, but he can't properly fly until he's completely invisible and interacting so little with the world that he's basically just a disembodied awareness with no senses beyond sight. He can move pretty quickly while hovering, though, if he so chooses.