[AgileSiamang7]

Micchy only a few episodes ago was commenting on how he was disappointed with Kouta because he didn't have the "strength" to sacrifice more people for Micchy's perceived greater good. Why on Earth would he now believe that Kouta would want to kill Mai of all people?

Because Ryouma, a guy who knows him less than Micchy does (who isn't completely there in the head these days, but still), says so?

Sure, Kouta's an up-and-coming Overlord now, but all he's targeting still are other Overlords. How could even Micchy fall for this, unless he's just really looking for any excuse or reason to try and kill Kouta again?

I get the (minor) bit of evidence Ryouma brings up, how it's the role of the Woman of the Beginning to hand over the fruit to the person she deems worthy, and that would likely kill her, but Ryouma himself says that Kouta is an oddity. So why would that mean he'd act like the Overlords of the past and do the exact same thing to Mai Rushuo ended up doing to his wife?

This was what annoyed me about the set up of that fight, Micchy was being played by Ryouma a bit too well. They could of come up with another reason Micchy would by, as well as the rest of us, because this one seems a bit of a stretch for me.