[Crossover] Is Dazai Being Positive Today?

My name is Shi Ling. I used to dream of becoming a kindergarten principal. Children are so adorable. They're angels, treasures sent to the world by God, sunlight, flowers, and raindrops... That's what I always thought, until I really became the principal of a strange kindergarten. "A Yin! Don't flick your boogers onto your classmates, you little rascal!" "Kyouya! Stop picking on your classmates and put that tonfa away! Wait, why do you have another tonfa?!" "Illumi, be good and change your face back. You'll scare the other kids!" "Kagura, let go! Stop biting! You can't eat your teacher! You can't eat your classmates either!" I have it so rough. All kids are little devils! Wait, isn't there someone missing from the class? Where's little Dazai? "Teacher, Dazai's gone to hang himself again!" Me: "..." This is so hard. I just want some peace and quiet. Reading guide: 1. The couple is set: Female lead x Dazai. 2. The blurb covers only part of the story. The first half is about people from other worlds transmigrating into hers, with the female lead raising the problem children. In the second half, the female lead transmigrates to other worlds. 3. The female lead is a snarky first-person narrator. If that's not your thing, please don't read. Theme: A guide to educating problem children