I tuned in this drama for Kido Ma. I think he has to be one of the most charismatic actors going around.
Seriously, how many actors really possess 'natural charisma'? I think like 2-3% the most.

This drama is about the female lead 'Qian Xin' who travels to a parallel universe where everything is reversed.
- Her love interest in universe 2 is actually her best friend, not Kido Ma in Universe 1.
- Her best friend is unsuccessful and single in this new universe compared to successful & married
- Her parents are together but fighting in this new universe compared to divorced & father deceased in Universe 1

Mid-Way through the drama, the Male Lead Kido Ma from Universe 1 eventually does swap with the Kido Ma from the new universe. This new universe is more comical, and characters seem more likeable than those in universe 1. The character building in amazing, the leads both Kido Ma & Qian Xin really do nail it in bridging that connection between all the cast, the cast really does come alive, the events such as few deaths do become emotional and i feel the leads and cast really do nail these scenes.

I feel Qian Xin counterpart from this new universe is irrelevant, when we do see her she doesn't speak. It's like she is only there to be seen not heard. However not the same for Kido Ma in the new universe, sadly he does pass away, felt throughout the drama that both sets of Kido Ma's from both universes did fall for Qian Xin from Universe 1. The second male lead from universe 2 does fall in love with Qian Xin from Universe 2, doesnt matter. I can accept this outcome as its really Qian Xin from Universe 1 that the audience falls for....

This drama is beautiful, you will get emotional and invested in these characters.... Major difference in your investment in the leads from both universes....
Female Lead 'Qian Xin' from Universe 1 you will connect with her 100% over the 'Qian Xin' from Universe 2
Male Lead 'Kido Ma' from Universe 2 you will connect with him 60/40 over Kido Ma from Universe 1 however you will still accept both, you will still get emotional when Kido from Universe 2 passes away

I recommend you watch it, yes you will get confused at some point when watching.