Golden Hands's manga / #Alpha x omega(42)

A little confusing story just because it lacks in explanations. Omega (Taein) is an ex prisoner, he murdered someone while protecting himself, he suffered a lot in prison for being an omega (he was abused) till he met Beomjae (alpha), a gangster, that protected him but it was not priceless. Now Taein is stuck in a toxic relationship because he owns Beomjae.

Omega = orphan who was abandoned in a snowy night, was found by his new father (he only adopted him because he was a omega). Has a family complex, wasn't loved just used as a tool and his father always cursed him for being useless (he has a condition on his pheromones). He was basically sold to marriage with a son of a conglomerate (Kwon Ido) Alpha= unknown past, knows the omega (Sejin) too well even before they met officially, seems to know Sejin from his childhood (or another life because he left intended that they fucked before Sejin's second heat)

That omega is incredible, A1 flawless, he is as good as alphas, even better but he struggled a lot to get a job (for being an omega) after his grandma died. He was admitted as a secretary by the chairman/CEO/president(?) of the company right away but she wanted him to be the "therapist" of her grandson, the therapy is basically having sex with him (because the alpha has strong pheromones???), he only accepted because his salary would be 500k (monthly?)