High school student Cha Weilan lives in a world so ordinary that he almost doubts his own existence. But unfortunately, he was chosen by the author and became the next tragic male protagonist. The mysterious transfer student, Good Motor Oil (not) disappears and no one remembers him anymore, except the unlucky male protagonist. So the author will give great responsibility to these people, such as spiritual masters, vampires, monsters, monsters, and sprites. After you sing and I appear, is this world still the original world? Or maybe this is the real world.