Guardians.

Shi Lang and the rest took a couple of hours to talk about the various topics, and they helped the elder couple in closing and cleaning the cafe before they headed back home. Theseus took the responsibility to drop everyone home. 

This was not because he was worried about their safety. The crime rate in the federation was almost zero because of the technological advancement and surveillance network. He just wanted to talk to his class about the so-called realm of immortals that Shi Lang had mentioned. 

He was the most logical person in this group and Shi Lang liked him because this guy will question almost everything inside his mind. Even if he did not say anything to the people around him, his mind was constantly moving in a direction of its own.