Theory #1: Seung Cheon and Tae Yeong actually returned to their original families

NOTE: Read this after watching episode 04.

WHAT IF

Seung Cheon (Original) and Tae Yeong (Original) already switched before?

1. The babies were switched at the hospital; or
2. Somehow Seung Cheon (Original) or Tae Yeong (Original) acquired someone else's golden spoon and used it without knowing what it does?

Ten or so years later …

• Seung Cheon (2.0) bought a golden spoon and switched with Tae Yeong (2.0)
• So now they are back to their original families.

Consider the following:

• Seung Cheon (2.0)
  • Intelligent when it comes to money, stocks, and running a business.
  • Calculating
  • Greedy
  • Healthy
  • Ready to sacrifice his parents for money
    • Like father, like son. Mr. Hwang would sacrifice his son to protect the money he's earned.
  • It's all about the money
• Tae Yeong (2.0)
  • have a panic disorder (it can be genetically acquired as per studies); Mr. Lee also experienced a panic attack before as per Episode 04.
    • Sure, his panic disorder may have been caused by the shooting incident in the US. But what if it was only a trigger?
    • Not to mention, Mr. Hwang is so strict too, but what if it was also only a trigger to his genetically acquired panic disorder?
  • Talented in drawing
  • love comics/webtoons
  • bad in stocks, business, and money
  • as per episode 04, he will never sacrifice his parents for money
  • he hates Mr. Hwang and his wife

Could it be that Seung Cheon and Tae Yeong actually returned to their original families?

I think this is plausible, it would be interesting to see where they take it.