Wesley tells the Daredevil that Nobu's dead (since ep 11 implied Matt didn't realize he killed him o.O) this can either be right after, like Wesley checks the burning body or later in time. Basically Wesley completely breaking apart what Matt thinks of himself, all the guilt over killing someone without hesitation or thinking about it before like Fisk, and if he deserves to be punished right then, that's super great.
Matt/Wesley: guilt