Luxa Trigagon or rather Luxa Mimas unknown to him.
Obviously when Jioni was younger he was even more promiscuous then he is now, That happens to comes with its risks and consequences it would seem.
Having many relationships and flings he probably could never recall, due to his family's status and connections relationships were just not sustainable. However somewhere along the way one managed to keep a piece of Jioni and the result is Luxa, unbeknownst to him.

His mother never told either of them, preferring to leave it unsaid. She remembers Jioni fondly but is happy with her wonderful son and their little family, knowing its the best for both her and Jioni to remain independent.
Although Luxa wishes he could know his father dearly he is content, never angry of his absence. Maybe one day he'll get that chance.

Luxa was born with a strong mind and great drive to prove himself, however of rather short stature always the target of jabs, insults and teases.
He takes his failures in rather extreme fashion, developing a great and perverse desire for intense physical pain and punishment.
Failures for him is ineptitude, developing an major inferiority complex at an early age due to his physicality. Self punishment was he felt a deserving and apt way to discipline himself.

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Wonderful new boy by ever amazing friend  HardcoreCandyStore
Luxa is mine!
Also apologies for a rather random mess of backstory, I'm terrible at this