Apparently he just died, just later than he did in the novel.
And I agree fully. It's stupid. Father dies and suddenly, Jamie decides its a good idea to become a demon? I hate absolutely everything. I loved his dad. And he, of all people, understood losing more than anyone, he didn't need this "reminder" or another "trial". It's so unnecessary.
Yeah. Especially since his family was fine being everything to him. This was the most unbroken, healthy, lovable family in all male reincarnation or transmigration I have read since Trash Count, and there, Cale's birth mother had also died before the story started. But at least he has a good stepmother. I really loved the fact that this story had a functional, fully existing, non-misunderstanding or tsundere riddled family. I'm so not coping with this shit.

To the people who have read the novel PLEASE give spoilers does the dad really die or does he get saved? I understand the concept of the MC going through all sorts of hurdles and facing difficulties but this death for me seems unnecessary.