City: How Did You Enter the Game World?

A game called "Fifteenth Floor Domain" has now become an insurmountable APP. The male protagonist, a genius player, is known as a domain boy. Because his account was sold by his father, he accidentally entered the game world after leaving home. A doctor discovered this miracle and used his scientific method many times to save the male protagonist back to the modern era. The male protagonist only had a limited time to return to the modern era each time, and embarked on a journey to the top in the game world! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.