Umbra Inferis #1: That Possessive Mafia Boss

Nemesis Louie Montero is a class S assassin who was given a mission to marry the mafia boss of a certain organization that would help them rise from the depths of falling. He was named Iverson Jade McGregor, his name as cold as him. Nemesis belittled the mission and expected McGregor to go on easy on her but it turns...