ROMANCE
I came into this drama liking xing fei and allen ren invidually and i really liked them together as well. I was not a big fan of the secondary couple for some reason as i just couldnt get interested in their storyline. if you are able to get into the secondary couple, that's a big score for you because they seem pretty cute and they have some good kissing scenes. Because the ML's character has a robotic heart and has to monitor his heartbeat, the ML and FL aren't allowed to be doing "steamy" stuff that will raise his heartbeat, so sadly the FL and ML don't have any steamy kisses in this drama. They have some very cute peck on the cheeks tho!

OST
I love this drama's ost omg. just playing certain songs during a scene montage will immediately get you in the feels just because of how amazing the ost is. even if a scene isnt that touching for a viewer, the song will definitely get you in the sentimental mood.

PACING
The drama definitely started off really strong, faltered in the middle, got better nearing the end, and then the ending was satisfactory, but was also rushed. However many cdramas face the rushed-ending-plague, and in the realm of rushed cdrama endings, this got the better end of the stick. (so dont let a rushed ending deter you from watching this, it's still a happy ending that is wrapped up decently).