I’m interpreting this as a platonic Sasuke & Itachi relationship because… incest is not my thing… but regardless I don’t know if I can fill this prompt because, well, at some point Sasuke is going to find out the truth in canon!DoS and I wouldn’t want to presume how Silver Queen handles that.
Maybe I can fill a different prompt for you, anon?
Sorry, anon, I just feel like Sasuke’s reaction to the truth coming out will be a significant plot point in DoS and there’s no way I can 1) predict what SQ will do in canon!DoS and 2) do it justice in three sentences.
I mean, I can do a Sasuke & Itachi AU or some other canon!DoS event that isn’t probably going to be an important plot point?