His mother was so angry that he died of illness, and his grandfather was bankrupt, took him to live in a poor area, and passed away a few years later.
So, after being adopted by Aurora, he took the initiative to ask if he could follow her surname and change to a brand new name.
Lumian didn't know if the guy who just contributed body fluids was dead or alive. If he was dead, it was undoubtedly a good thing. If he wasn't, he hoped that the ghost of Montsouri would help.