I already read this a while back and didn't actually want to reread the first few chapters...

So whoever has this mark has a limited lifespan, like a terminal illness with a set timer, and yes they seem to be all from the same mother

Thanks muahhh. But the parents lowk make it so hard to enjoy so

Tell me about it, like you may have responsibilities but you also have a time limited young daughter that is being targeted by someone dangerous ヽ(`Д´)ﾉ
So like protect her properly ffs

Personally I just choose to believe biaton is the parent and that's it

Ikk! you WOULD think that parents of a time limited child would want to spend time with her but NO. The emperor in name yet they can't protect her from a bunch of reporters trying to tell lies about her. They don't even make sure that the servants know her face and try to make her life easier in the palace but NUH UH!