Free and Wild like Lightning (Killua x Sonic the Hedgehog Series)

(Another Killua story, real original) You already know how this song and dance goes..... Being born and raised to be a heartless and cold killing machine, Killua Zoldyck never had the best life. Tortured and trained since birth, all he knew was hell. He longed to be normal.... To have a normal life and experience thin...