[Okay, it's a definitely little personal. Because he hates the idea of needing help from anyone, especially Deku. And yet, Deku is absolutely right. The idea of bonding with some random extra is almost worse. He's put himself into a corner and he refuses to admit.

Katsuki sits back on the edge of the tub, looking exhausted and drawn, like he did that night at Ground Zero. His eyes seem to eerily reflect the light from the moons outside as he looks at Deku and then to the floor.]

I don't need you to worry about me. I just have to get through this shit... [The clouds move outside and the light from the moons shift and enter further into the room. Katsuki hisses and pulls further away.] Then I'll figure out how to control this shit and get back home.

But bonds are supposed to help witches too, you know.

[Maybe Deku should look after himself for once.]