How to Spoil the Storyline

Famous swindler died at the hands of his enemies. He promised he would never stop swindle even if he died this time. After taking his last breath, he opened his eyes with another person's body. Realizing that he has fallen into the world of a novel written by his deceased lover. However, the body being possessed is really trash. =================================== [ TAG ] — Sword Wielder, Evil God, Medieval, Reincarnation in Another World, Cunning Protagonist, Overpowered Protagonist, Evil Religions, Religions, Nobles, Demons, Sword and Magic, Previous Life Talent, Ruthless Protagonist, Brother Complex, Aristocracy, Schemes And Conspiracies, Slow Romance, Male Protagonist, Carefree Protagonist, Game Element, Special Abilities, Protagonist Strong from the Start, Saints, Hiding true Abilities, Multiple Identities, Dark. ===================================