Rhapsody of the Unknown World

The full title is "A so-called rhapsody composed of fantastic stories from a protagonist who tries to seize his own destiny in a strange alternate world where the author himself has never known the details." (Unused book titles: "Have you ever seen such a refreshing and refined substitute", "Re: The life of a lord in another world from scratch", "There seems to be something wrong with the style of this system", "On the art of riding and slashing") Corleone Quesada: Actually, at the beginning, I just wanted to live a peaceful life... Contains trace amounts of JOJO and riding and slashing elements, so friends who have never heard of it can feel free to use it. (I'm a newbie here, please take care of me)