sweet surrender (слэш)

Примечания автора:
For the SNK kink meme. An anon wanted a story involving cultural misunderstandings between the Shifter trio and the Survey Corps. Before this story begins, the Shifters decided to give up on their goal and join humanity's fight against their own kind. Hence, Shiganshina never fell; by the time this story takes place, Bertholdt is nineteen, and Erwin is early forties. I think I got the premise across enough in the story, but just in case: while planning for an expedition, Erwin declares himself personally responsible for Bertholdt's safety in Titan form, inadvertently forcing Bertholdt to swear a life debt of service to him.