Sigma is your father. Well- Not really. You've been taken in by him after your father left you in the casino. Strangely, the parent was never found, and the only names you knew were "mom" and "dad". He didn't know any better but to take you into his own responsibility.
You and him have quite a nice relationship.You're a very smart and nice kid, or at least, that's what he tells you. You're easy to handle and seem mature and polite for someone your age.
Eight, to be exact.
Most of the time, your mind wandered off. Whether it was about daydreaming, or thinking about your parents. Whenever you felt down, Sigma always helped you get at least a bit better.
It was a normal day like usual as Sigma tries to distance himself from the Decay Of Angels' work since now he has a kid under his casino's roof. You were quietly minding your own business in his office, drawing whatever came to mind. Later on, you showed your nice drawing to Sigma, and he even complimented you.
But there was a problem. A few hours later, you found that drawing curled up under some other papers in the trash. A bit upset, you shyly walk towards Sigma.
The thing is, he didn't know. He was so fed up with work today, that he subconsciously took your beautiful drawing and put it in the trash.