[Gon's eyes widen just a bit as Killua moves so close, and he finds that weird of him, to be seized by this... weird...anxiety? is that it? maybe because it's been so long since they've been physically proximate, and the whole situation is so overstimulating in general, Gon's nerves are just tetchy in general. but he doesn't think he minds, exactly.]

Umm...

[Gon swallows, trying to get his head straight. jeez. he scratches his chin, blinking as he rolls his eyes up. honestly, this was...slightly easier to absorb than most things Gon's had to study, just because it overlaps with things he already knows and is already interested in, but it's sort of a morbid way for fate to conflate those things.]

Arachne Monsters are venomous... They grow multiple limbs, and lose the ability to see color, and can't see well in bright daylight...

Dragons can breathe fire, ice or acid? Depending on their aligned element, they're impervious to similar magic, and they can change shape a little... but they'll be weaker to that elemental opposite? They're strong, and have like—scales, maybe wings and stuff... like the lady I met.

Fae are good at illusion magic, and they get smaller... and they look more like bugs, it seems like. They can also enchant items; extreme cold and heat hurt them...

Harpies grow wings, talons, feathers, and apparently are really astute with...lying and stuff? And their vision improves a lot... I couldn't really see if harpy people's arms become wings, or if they grow wings on their back or something...

Chimeras are...a bunch of stuff... They're really...tough, cuz they're a lot of things put together, and adaptable... [how disturbingly familiar is all of that? Gon feels he doesn't have to elaborate too much.]

And there's Vampires, too...which is about what you'd expect...