[Muffet blinks in surprise and peers carefully at Asch's soul, looking it over with a thoughtful eye, although she still makes sure not to get too close out of respect for his boundaries and because the bright red color stirs a few uncomfortable memories for her, ones already close to the surface tonight.]

That's... odd. Not the soul itself, the shape and color are all what I'd expect from a normal, healthy human being but- See this here?

[She indicates one of the trailing lines, pointing at it but not actually getting in touching range.]

I have honestly no idea what this is, it's not a part of a soul I've ever heard of before. I'm... not entirely sure it is your soul, exactly- or not entirely yours, somehow. It certainly starts as part of you, but it goes far beyond you, much too far for me to reach.