The body swap of Yoon Taemin and Han Siwon was probably never explained. Also, Han Siwon possibly does not exist anymore, with him dying in the body of Yoon Taemin, thus explaining how Yoon Taemin has supposedly "died". From what I recall, having read the first 40 plus chapters months ago, was that Min Woojin had a bet with Yoon Taemin to try and prove that he is actually Yoon Taemin and not Han Siwon... But then I'm lost at how it became to be a reputable families struggle and how Lee Joonwon (?) just did everything for fun...
The body swap of Yoon Taemin and Han Siwon was probably never explained. Also, Han Siwon possibly does not exist anymore, with him dying in the body of Yoon Taemin, thus explaining how Yoon Taemin has supposedly "died". From what I recall, having read the first 40 plus chapters months ago, was that Min Woojin had a bet with Yoon Taemin to try and prove that he is actually Yoon Taemin and not Han Siwon... But then I'm lost at how it became to be a reputable families struggle and how Lee Joonwon (?) just did everything for fun...