This event will make it easier to write conflict in the school arc if any, as the mc will be descriminated by having no runes and defeating people with powerful runes will further make more enemies as they get humiliated by losing.
Tanjiro should kill nezuko in place of inosuke making him remember being human. And spend the rest of his life locked away in a temple forever begging for forgiveness but never granted death.
Why do the royalty want to gain spirit's power again? Can't they just promote people to nobility when they have a spirit's power and are loyal to the crown?
So many questions are being raised but so little are getting answered, also a reminder that japan has an insane conviction rate, once you're the prime suspect you will be coerced into confessing a crime you didn't commit