Yuusei, having remained otherwise quiet and out of the way for the others to do their thing until this point, raises an eyebrow as he scouts for an appropriate place to hide his large body. "I've heard that the Mother experiments with iron; is that what's in this stash you're looking for, or is there more of hers that you're interested in?"

Glancing briefly to Lambert, he adds, "If iron ends up being our earliest convenience of getting these things off, I'd be willing to take the first blow." If they're all weak to iron here, then trying to remove the suits with it is undoubtedly risky, and he doesn't have any particular abilities that would be interfered with if they tested effectiveness on himself.