I Am Doted on by the Main Characters of the Original Novel

“I’m seriously annoyed right now—” A heroine‑to‑be who is kind, but attracts nothing but misfortune. A hero‑to‑be who is sweet only to “his woman.” I seem to have possessed a character inside a novel where these two are the main leads… but why is everyone in kindergarten!? Wait, did I actually die? Tomorrow was payday, though…!! Huh? But if I remember right, this kid is… “Well, I’m just a mob character, so it’s okay if I change the story a little, right?” In a kindergarten where all the original main characters are gathered, a hidden mission begins: to save the heroine who’s supposed to fall into the depths of misery…!! That’s all fine and good, but… why are the original protagonists so insanely attached to me!?