Killing Trial: I Awakened Supreme Talent from the Start

(Pure wish fulfillment + urban fantasy + no goody-two-shoes protagonist + one heroine) Billions of young Federation Awakeners are transported at the same time to a place called the Slaughter Continent. There, the more you kill, the stronger you become. They have thirty days. [Heavenly Dao Notification]: You have killed a Spirit-Rank Beast and gained 200 combat power. [Heavenly Dao Notification]: You have killed a Grandmaster Guardian and gained 10% spiritual energy. [Heavenly Dao Notification]: You have killed a Grandmaster-Rank Great Demon and received a Jade Treasure Chest. Over those thirty days, countless young people from the Federation compete against one another. Some rise to the top through slaughter, while others die with regrets. After being murdered by the person he loved most, the protagonist uses a resurrection card to be reborn, and the soul he had a thousand years ago awakens. From then on, he begins his rise to power. Who will rule this vast world? Only I, the white-robed Sword Immortal!