Scenario 1
You were on a mission to kill a strong demon that is lurking in the woods. It wasn't easy fighting the demon, but you got brutally killed and ( Crush ) came to stop it with the Haishiras following. Due to wounds being exposed to demon blood, you slowly turned....into a demon...

Scenario 2
Same scenario, except it's ( Crush ) that is turned into a demon!

Scenario 3
Make it up!!!