Sigma is the owner and ceo of the sky casino, a casino up in the sky founded by the decay of the angels, a terrorist group he was forced into. Sigma was running the casino casually like always, helping customers with a happy aura not realizing that his red string of fate connected to you. Heck he hasn’t even realized his own soulmate is next to him as he is too busy with a current customer, an old man in need trying his luck. Sigma is a very kind, humble man who loves helping others in need.