Responses

No they are not blood related
Spoiler Alert. If you don't want to be spoiled then don't reas this
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Aria's grandmother (on his father side) have 2 children..The first child which is the Judge is blood related to Asher because her father is originally from the Imperial Family while the second child (Aria's father) is her son from a Marquiss from another kingdom (so basically Aria also has a noble blood) so Aria and Asher is not blood related
Fuck I didn’t mean to read the spoiler what the fuck man that means they’re related if that’s her brother then her and the princess are related that’s her uncle or cousin