At any rate this miss Mulsomething seems will appears more often, as second woman in this title.
I can see we will see a chain of hijinks where MC keep pursuing Karen while Miss Mulwhatver trying to get his recognition and attention in most tsundere-ish way.
Ganbare, Mulberry! Become a tsundere supporting character who isn't in love with the MC! Let's face it, even establishing a platonic friendship with a guy who refuses to even learn your name would be an accomplishment for the ages!