Jung Soo Min is best described as a FRENEMY ... Love with your head not just your heart!

I am not really good at pronunciation
Korean Names , but that lady, the victim (main character) ... Am so glad she got a second chance to life and paid back her so-called boyfriend and friend in their own coin
She gave them the taste of their own medicine and they choked ???


Though I am curious , if they returned from 2023 to the year 2013, does that mean that the other characters returned as well???
I would love some clarity on that aspect