It is MDL where high score is necessary even if you don't get logic or sense in story

So FAT cook enters body of banker and fall for his rich young pretty sexy wife...and started screwing her.
While he also try to meet his real wife on side without telling her that he got into rich man's body and got his wife in his bed.
It was disgusting that even after knowing that man in her husband's body isn't her husband hye jin keep that man without a slight guilt Or shame
man drives his real wife to her death and then leaves his orphan kids

Then comes the illogical ending episode
So 1st it was cook who enters bankers body
So everything goes back in time but COOK doesn't have any memories of him screwing bankers wife..
But banker who was dead. Has memories of his wife and cook in his body making out in there bed and kai feel he did good thing by leaving those memories
It was cooks memories so why they remain with banker who died ?
Our banker is fine with all those memories in which he sees his wife falling for cooking knowing her husband is already dead..... He is not only fine but happy and start using all those things to seducing his wife again

Just think about it you have memories of another man screwing your wife and your fine ?
Cook should have those memories because it was his memories
Do kai forgot that it was cooks soul' that enters bankers body and hye jin fall in love with cook.

Hye jin was a shameless woman who was sleeping with a married man just because he look like her husband

She would not give a single glance on real cook as a man.
They even show them at ending smiling at each other. but hye jin just think of him has a fat ass funny guy to laugh on not a man to screw,
like there is future affair between sexy hye jin and fatty cook. and banker with all cooks wife's memory meeting her behind her fatty husband to have her has his ugly side mistress.