Tower of God: I Have a System

This is a story that travels to the world of the Tower of God. When he first arrived in this world, he discovered that he had a system. He met Ye in a dark cave and practiced in seclusion for three years. When he came out, he found Ye and Rachel who had fallen to the ground. After seeing the two people climbing the tower, he decided to start climbing the tower... The introduction is weak, please read the text! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.