Very cool, I think I have a clear model in my head now!
Check this out:
In one version of reality, there were Junctures pointing to 1984, to the early 1800s, and the 1500s.
In 1984, a team of undercover federal agents, including Brad and Denise Johnson, parents of 10-year-old Blake Johnson, investigated Leslie Lau, a shady businessman who was making millions scrubbing pollution and toxic waste by sending it into the Netherworld, and from there into other junctures.
The agents didn't know about the Netherworld. They didn't know the chrono-local Dragons, who were also investigating Leslie Lau and his patron, Huan Ken, King of the Thunder Pagoda.
Brad and Denise Johnson helped the 1984 Dragons defeat Leslie Lau, blow up his mansion, and kill him.
Huan Ken was pissed that his drinking buddy was killed, so he decided to erase the Dragons and the Johnsons from history. He and his Thunder Knights ambushed the 1984 Dragons and killed them.
Thunder Knights attacked Brad and Denise Johnson and 10-year-old Blake Johnson. In the chaos, Blake Johnson's mother pushed him into a portal for protection, without realizing she was sending him into the Netherworld.
Blake got lost in the Netherworld and emerged in the 1500s, where he was trained as a Ninja by Hattori Hanzo. After 15 years, he found a portal to 2021 and emerged in the Contemporary Juncture to find that his parents no longer existed. They'd been wiped from existence!
What happened was that Huan Ken went back in time and killed ancestors of Brad and Denise Johnson and destroying some feng shui sites, which ended up causing a Critical Shift removing the 1984 portal to the Netherworld.
Huan Ken had caused Brad and Denise Johnson to never be born, as well as shifting the main junctures around.
Now, in our current game, the Dragons (including Ninja Blake Johnson), have traveled to 1982 through a Pop-Up Juncture. Blake is trying to find out what happened to his parents.
Brad and Denise Johnson don't exist, but Blake meets Dan and Belinda Wilson, who are the souls of his parents laterally reincarnated. They're still federal agents investigating Leslie Lau, but Leslie Lau no longer has access to the Netherworld. He knows something has changed and he's pissed about it.
Leslie has captured Dan and Belinda Wilson and it's up to the Dragons to rescue Blake's "parents", defeat Leslie Lau, and decide how to deal with the fact that Huan Ken caused all of this chaos in the first place.
Huan Ken has been this group of Dragons' patron for a bit, alternating between celebrating their successes and warning them that he can wipe them out at any moment if they cross him.