My Uncle is Don Quixote

My name is Li Wei. After my parents passed away and left me with a huge debt, I was adopted by a distant uncle in the United States and went to New York to live with him. Wait, what the hell is this Middle Ages Adventure System? It identifies my uncle as a mad Knight? The wealthy district of the Upper East Side is a Noble Courtyard? It looks like there's a succubus den up ahead, I've decided to go and explore it... First day in New York, I abided by the law. Second day in New York, I tested the waters cautiously. Third day in New York, I decided I would protect the world. Fourth day in New York, I started to get tired of it. This world sucks. Fifth day in New York, am I the only Superman in this world?