My theory - spoilers

The author has given constant breadcrumbs about the prosecutor’s traumatic past - scars on his back, father and brother’s deaths associated with his emergence as an alpha, hate of omegas, weird shadowy mother figure, him saying things like ‘I wish I had never been born’, and most recently talking about the pheromone rage case that had killed a father and brother, with the father protecting the killer (prosecutor says the dead father was a good father even though he was not a good husband).

I think that the pheromone rage case he was talking about was actually his own experience of emerging as an alpha and inadvertently killing his father and brother. His father saved him and left him in the clutches of his crazy mother. I believe the prosecutor plans to finish off his mother along with those that helped her turn him into an alpha.

Further support for this theory is from the raws…beware, spoilers ahead.

SPOILERS!! SPOILERS!! SPOILERS!!
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In the raws you see his mother torturing him in cahoots with the pharmaceutical “Father” (aka weirdo) that ‘trained’ Saein. The pharmaceutical weirdo brings omegas with him that sexually assault a tied up prosecutor. My guess is that the prosecutor plans to bring down the pharmaceutical company, his mother and himself at the same time.

Current translation shows the prosecutor trying to convince himself that he is not emotionally attached to Saein so that he can complete his plan. The end of the second season raws show him falling into despair and giving up on all his revenge plans.

Saein will save him in S3, they will communicate all of their pain and trauma to each other, get a revenge and catharsis together and then live happily together and become a loving family.