I think Worst Girl hates Yo even more than I do, and is taking out her frustration against Men In General (or something) on him, like, she’s “enjoying” being so absolutely in control.
i guess she feels disempowered as a woman by Kei being so Objectively Superior, and she’s trying to cover over that insecurity by being Absolutely In Control.
guh.
and like, i feel like she subconsciously realizes that Kei is better for Yo (for a lot of reasons) and hates Yo for letting her ruin him. Yo is being scum, and she’s treating him like scum. She’s the one luring him to act like scum, but he’s still the one taking the bait (or the ‘bate, if you will).