All Worlds Sign-In System

Binding time travel to a system is the most popular sign-in system nowadays. However, this system does not look very serious. He is always teasing his host, and his intelligence is quite high. It can be said that he plays with the host at the palm of his hand. It is such an unusual system, but it is very powerful. It is at least 10,000 times more powerful than other seemingly powerful sign-in systems! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.