Gyomei regret series - kimetsu no yaiba (discontinued)

This is the story of Y/N an orphan that was almost killed by a demon however was saved by himejima however when trying to explain the demon he accidentally framed his (not actually related) older brother
Gyomei Himejima

Just so you know
1. This is a first person
2. I will write the character as bisexual just so almost everyone can relate to it
3. There will be many mistakes probably