The story is wacky and I think on paper, it is great, If you consider this series to be light, comedy and simple, then probably it works.

But I feel like this is such an odd series if you actually watch it more closely and really understand what's happening.

Mai Ying Xiong did not fully understand what is really happening. I think it is important for him to understand that. This made you think if Mai Ying Xiong fell in love with the real Gu Si Ren or fell in love with her girlfriend Lan Xi (who obviously is controlling the physical, mental and emotional aspect of Si Ren during the time they were together). At the end, did Mai Ying Xiong kissed Si Ren or Lan Xi? It was confusing especially the writers made it a point to show Si Ren as Lan Xi.

For me, it was disappointing because I can see Ying Xiong fell in love with Lan Xi in the physicality of Si Ren. Si Ren (his real self) was left unclear of what is truly happening and in the span of 7 days, it was not him who fell in love together with Ying Xiong. So in reality, the love between the two does not really exist in the span time Lan Xi is in Si Ren. I just think the whole backstory was a rushed way of saying to the audience that hey Ying Xiong fell in love with the real Si Ren, but IMO that's bullshit. And even then, Lan Xi deserved an apology even if she was dead (had Ying Xiong knew what happened - then this should happen and clear closure between the two is just right)

The execution of the story is cute and fun tho. I think it deserved a second run where the real Si Ren is with Ying Xiong.