[He moves his thumb to touch the side of one of her fingers, focusing on staying conscious for the mana exchange to properly take effect. even then, though, he tries talking before he's properly ready to.]

I... fine... [He pants for breath, clearly more a bit out of it, as over a few minutes his breathing steadies and rights itself.]

I'm... fine. I had pretty much all my mana when I did it. That's the problem. My weapon makes it easy for me to give it my mana and activate its power... but it tries taking as much as it can on its own, no matter what I try. [His other hand finds its way to his forehead, and he wipes off the sweat from his exertion.] When I use this trump card, it puts all I've got into it. So... I can only use it once right now.