There are plenty of species in the galaxy on the larger side, Zeb among them, but Kallus has always been one of the larger men in any given room. He's tall, broad, with strong legs and a wide chest. He's used to being bigger, using it to his advantage, being intimidating and also being too much for someone smaller to take on.

It's not like that with Luther.

He sags against the shower wall, barely keeping himself up as Luther sucks his cock, and he holds tighter to Luther's hair as he gasps. "You're so... so knifing good at this." And he's so close, so much closer to the edge than he imagined he could be tonight.