Reflexively, he slaps that hand right away, a growl rasping in his throat. This is exactly why he wanted to go alone. He and Raph can barely get along at the best of times, and with how crummy the last couple of months have been, this mission would be like throwing two angry cats in a garbage can and banging on it with a metal bat.

He sees no way around this. Perfect.

"I'm meeting someone for a job. That's it." He says it like he's spitting out poison. He knows being difficult about the truth is a futile effort at this point, but he doesn't care. If his brother is going to give him hell about this, he'll give it right back.