Uncle also has a lot of parallels with taro: brought to a different world and distracted by various things like magic, returns home after missing his family, finds out a lot of time has passed and loses his youth and the opportunities it would have brought, plus important things (Sega) have been lost during that time.
Uncle never lost sight of his goal though, and managed to return before all of his family died, and now gets to hang out with his nephew, and play with Sega emulators.
Moral of the story: don't get distracted by trivial things or you will lose what's important and everything around you will leave you behind.