For as long as you can remember you had a tiger claw necklace in your possession, but it was no ordinary necklace…it was a necklace inhabited by the tiger spirit, it allows the user to turn into a tiger beast, however there’s a side effect…strong emotions can trigger the transformation into a tiger beast and can make the user have primal urges.

Since you have the necklace, you’ve been suppressing the primal urges, and you actually started to live a normal life.