I was scared that Gyari would figure something out about Irumi, but instead she has blinded herself in her interest in Kuromu. Phew!
Kuromu's marriage proposal is obviously fake. I'm pretty sure Ameri, Lied, Mal, and Azz can assume this, too.
It's just a fabrication to make Gyari "shine" and show her true colors within either fierce competition or blurt out something on accident.
Kuromu wants to see Gyari go down.
And I thought Gyari would represent the selfish prince, so Gyari is more evil than I thought.
Thanks for the chapter!