I think the ML def made a deal with the devil (demon) to be able to follow the MC’s soul wherever he went after he died. He clearly loved the MC so much and the violent bursts aside what we the reader usually see is very obviously the prince.
THE PLOT CAN DO WHATECER IT NEEDS WITH THE COUPLE BUT LEAVE THAT POOR BABY ALONE ಥ_ಥ
I think the ML def made a deal with the devil (demon) to be able to follow the MC’s soul wherever he went after he died. He clearly loved the MC so much and the violent bursts aside what we the reader usually see is very obviously the prince.