Everyone sit down and wait for any teacher to barge in.

"W-what? What's happening in here??"
Then, laidback as always, Mizore crosses the door, and almost drops her lollipop at the sight, "What in the freezing hell are you doing in here?!"

She raises the tool and speaks from it: it's sound clear, but not uncomfortably loud; "Attention everyone, in name of the school's board I've came to announce the merging of classes 1-A and 1-B!! Walls won't separate love and friendship anymore! Yuh hah!" She jumps, making a V symbol with her fingers and winking.
"Anyway, in front of those facts, we really struggled with something... We got these two lovely teachers here," She points with both arms at the two, while both try to vaporize each other with their gazes, "What should we do? Separate students from their lovely masters?! No!!"
"That's why, we decided to let them BOTH be your homeroom teachers!! Jaw-dropping, am I right?" Kurumu and Mizore really did drop their jaws...

Mizore pulls her phone and starts doing whatever, paying little heed to Kurumu's whimpering.

Before sneaking away, Ruby unpretentiously slips closer to Hanami, making a point of bending really close to her, "Oh, hi there, Ha-Na-Mi-chan~ So, how was your first day at school, eh? Exciting?" She grins, "Heh, just wanted to check! I was thinking about you last night, you see~ Oh, and if you got any more problems with that nosebleed, well, just go to the infirmary! The good nurse would loove to tr-" She's interrupted.
"Ok, that's enough!" Mizore-sensei comes, pushing Tojo away, like she was a have furniture still locking eyes with Hanami, "Get out... You're way too noisy! And actually a threat!" She adds, finishing the removal of the witch from the class. She gives Hanami a quick blank glance, hating how her cold and pale skin makes her blush very easily.
After the ruckus ends, and momentary silence ensues, both teachers approach the teacher's desk.
Kurumu dramatically places her nameplate on the desk. "As the superior educator, I shall sit here and-"
Too late, Mizore casually slides into the chair before she can finish. Kurumu gasps. "You can stand." Mizore says, coldly.
With a grunt, Kurumu tries to bodily push her out of the chair, Mizore resists, and the whole class watches the two in a pushing contest, for the chair.
After a moment, both are panting, each having half of the chair to sit at.