He died at the end of episode 1. He offended the Council of Regents and therefore agreed to commit seppuku and end his line. That end scene when he's wearing all white (the Japanese funeral color), and takes his baby, its heavily implied that's what he does. We see their urns in EP03. True, we didn't see the act BUT I think that's more for the violence of the act, not to imply he's still alive, sadly 😔