In his previous life, he was the heir to a company, trained to inherit the mantle of an assassin. He developed a cold, decisive nature, until one day he gradually became gentle and refined, though no one knew the reason. In the end, he was reincarnated. In this life, he is the son of Tang San, the Sea God, and has a System. See how he transmigrates across the myriad worlds.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.