Siobhan's attempt at comfort is very successful in derailing Yuya's focus, at least. He's kept himself so aware of the taboo that he doesn't expect her to touch him until she already is, and it makes him jump a little in surprise. He moves to put a hand on her head that neither pushes her away or lets her closer... but he stops just before he reaches and pulls his hand back instead.

He knows by now that if she's allowing it that it shouldn't be hurting, and he certainly doesn't feel anything uncomfortable, but he still looks up at Strange to gauge his reaction. He just didn't expect such a close gesture from them.

"... If you say so," He and Koemi finally say, in unison. They don't sound terribly convinced about it being fine, but at least they aren't pressing on the matter. "Maybe you should do a water act instead."

Because seal, duh.