Open Hand or Closed Fist Would Be Fine

This story has characters from demon (kimetsu no yaiba)
Sorry there will be topics that are triggering

Sabito will be alive in this story

Sabito is in a toxic relationship and has been sexuality, verbally, and physically abused. He's been used for many months and keeps it a secret from urokodaki.
He heals over time after leaving the toxic relationship and gets into a 5 way relationship that's much better for his mental health

(The characters are appropriate ages)