[Having no magic himself, it's a little hard to pick up on the remnants, but he's trained himself growing up to at least be able to somewhat sense these things. Especially hunter magic, which has a unique feel to it. So even if he can't do much with it, at least he can tell where it's coming from, and at least it's confirmation that the largest, lingering spell is obviously the chains]
[So he turns back towards Kamui]
Do you mind...? [Gestures towards the chains, wanting to approach but not wanting him to feel cornered or crowded because of it.]