Playing Couple-Killer on Valentine's Day Can Backfire

On Valentine's Day, February 14, the strongest Yin-Yang Master of Heian-kyo, the beloved mother of her little ones, finally snaps after being mocked by them. She sends the dog-teasing little brats off to different worlds to toughen up. What will the unsuspecting kids do?

Worlds featured:

1. Hunter x Hunter

2. Demon Slayer

3. Dr. Stone

4. Natsume's Book of Friends

5. Diabolik Lovers

6. Kamisama Kiss...

I can't remember them all, so that'll do for now. The worlds may appear in any order.

P.S. Based on the game Onmyoji. A Valentine's Day idea, even though Valentine's Day was already several days ago →_→ I'll do my best to keep everyone in character. The whole story is already written, so feel free to bookmark it!

Theme: A wonderful bond between humans and demons