Dont worry bros our Hiiro will teamcarry as always. You do not have to judge the innocent-minded demon king since she's unique as she is. Otherwise she cannot forge more endurable bonds with her thralls as long as she has the power to outplay the adversary. The problem here to me is just that...
She died because somebody poured too much money in this deluxe mixtape tour. You know who the culprit is (even when the culprit did not even have an inkling).
You got trolled by the author if you even think this ending was either satisfying or not. That means you accepted this as the end and let him get away with no explanation in the final chapter!!
9/10 for this kino ending that triggers every one.