The Guardians of Time Ep 12-The new Cycle
#12 of The Guardians of Time
so either way Lucas will be the next Monarch if his brother can't be found.
Meanwhile in the background, the team began to do their own things in college as time passes differently in the realm vs outside of it. However this had happened to Lucas- They had a discussion with his parents on what happens if they can't find his brother to lead the kingdom. "Then my boy... you are going to be the next king" Spoke King Charon. "I understand...father..." Lucas then went back to his dorm with the others when they were doing a video game night, and he joined it.