A fire incident at his(Kim Jae-soo) husband's home while he (Baek Ji-Hu )was away made Kim Jae-soo return to his third year of university (he was reborn), he finally has the opportunity to make up for everything he regrets. The mistakes that have been made can now be mended. So when Kim Jae-soo once again meets Baek Ji-Hu, the target of his unrequited love and his ex-husband, he decides to choose a completely different route. If you don't love me, then I'm willing to set you free. *Original book* Not translated