Turns Out I Am a Mysterious Monster

Wu Ning made an appointment to meet his ex-girlfriend, but found out that he was a weirdo and had given birth to five children for him. After that, he came to a world full of monsters. This world was full of mysterious evil gods, but the people just lived a peaceful life every day and didn't know the existence of all this. Wu Ning was invited by the Extraordinary Organization to jointly protect humans and eradicate monsters, but he refused. Because he is also a monster himself.