Izuku loses his stance a little bit when Bakugou tells him no; they're going all out? Is that okay? Will they break something?

Izuku's been nervous about using his power. He knows he has it, and that Bakugou told him it's the same power that they use in his vessel form. But when he's activated it, it's felt like so much more, and he's never let it release because of that. He's tried to just figure out how to make it be less... volatile.

"But--I might hurt something." At least he's honest about those anxieties. "I haven't used it right yet. It's not safe."