
I've been saying the same thing. We don't know if the ukes family was involved in anything and if they were traitors. We just feel sad for him because of his pov and think he's vengeance is justified.
It's clear that the seme is rationale, loyal to the king and wants to protect the common folk from the royals corruption.

By the looks of it , ML sure is loyal to the throne but do not actually appreciate Emperor. Often Emperor behested him to do his every vile bidding.
Whole annihilation of MC's family was a part of it , not sure if they were actually tangled in this whole traitor situation or plainly thrown under the bus.
There might be some inconsistency in my speculation since I read it on and off.
So, I might be a little controversial...but why he's seeking revenge against the seme? Like, yeah he killed his parents BUT from what I understood it was an order from the royalty...why seek revenge against the blade and not the hand that held the blade. The real villain is the royalty, the seme was doing his job as a governor...so he was following orders...tho I mean I understand that the first face you think of would be the seme, but wouldn't it be cool seeing the uke trying to get her help to kill the king?