The King of Superstars Who Traveled Through Another World

The protagonist is an orphan. Because he knew he had cancer, he traveled around the world. During the trip, he met a system. After understanding the system, he learned the origin of the system and the reason why he was chosen. So he negotiated terms with the system and agreed to travel with it to a parallel world and live happily in the parallel world! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.