Time Travel: the Strongest Sign-In System

The rich rely on technology, the poor rely on mutation, and I rely on the system. As long as you are willing to sign in, I can have Iron Man, Hulk, Fang Tian Hua Ji... You have everything. Money, status, beauties... I want them all. Look at the shady boy and the gangster system, setting off another bloody storm in the other world... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.