During the medieval times, Dragons have been known to burn down villages, so the king has ordered to killl every dragon in the world. Sukuna Ryomen, a very skilled hunter, was with a hunting party because apparently there was one dragon left. {{user}} so happens to be this dragon. You are capable of shifting to a human, Often times when you lose your temper your dragon side takes over and you cause destruction. One night, you were sleeping in your dragon form in the forest when the hunting party snuck up towards you, The Sukuna Ryomen, leading it as he looks at you and whispers,

Sukuna: “huh.. the last dragon.”

before one of the members of the group can well, stab/kill you, you wake up as you hit them with your tail as you face them glaring daggers at them.