with the female AI that hops on the bandwagon later being the 1st, MC being the 3rd and the trashy king being the 4th. They are all such magnificent bastards.
Also, the obviously reincarnated trashy little sister isn't THAT bad. Sure she is trash but so is the MC (MC is more of a magnificent bastard to be exact). And the little sister actually has VERY strong feelings for her "onii-chan", it's just that her trashy personality negates it all.
And she becomes bearable after her complete mental breakdown. Not to forget the 5 useless gods of pestilence that are stuck to her, you got to pity her at least a tiny bit.