Sabe o Rob também merece uma rota 
Sorry, Rob's very nice and would surely have an excellent route in any other game, but for the sake of Sihai's overall story it's better that he remain a side character. (There'll be plenty of Rob content though, don't worry!)
He's always been a side character :V He's got relevance ofc (especially in Jehu's route) but he doesn't have the same sort of relevance as, say, Jehu himself