When the Galra took Shiro's arm and replaced it with a robot prosthetic that's not the only thing that they did to him. He has returned to the team and is an amazing leader. They even found his boyfriend Matt, Pidges brother. Okay so all of that is going great and the Galra have stopped being dumb for a while, but what happens when Shiro and Matt do the do and Shiro finds something devastating? Will Matt be able to calm him and take care of this dirty deed? Sorry if this description sucks. I didn't want to give too much away.