Shin has feelings for FL, each meeting he expects for a chance. SFLand Shin, the circumstances shows that they dated or something happened between them in the past. Only one time sfl and ML met, they need a screen time for compensate the gap between SML and FL screen time.
ML starting to recall his memories, he suspicious about Shin, not concrete belief about the Shin.
Ending bit odd, but it summarised as a happy ending. Hong Ju knew Hoo Yeong going to US; however, she immersed into full night over work and didn't have time for bat an eye for check phone calls. Moreover, suddenly the airport scene and finally they met in the airport scene, kiss and travel together to US. Overall, good for watch: writer didn't dragging the plot for creating uncessary conflicts,and the mother character has bit annoyance. The ending of the drama needs a detailed conclusion even though it's happy ending, but got a half baked ending.
The crime plot is not needed after watching two episodes, and the writer should have focused on other plots. Byeon Mi Rae is angry and filled with hatred to some extent, which could be justified. However, when she told her father "from now on, she considers him dead," it crossed the line of her words a bit.
How is she supposed to keep it professional when even after hurting him with words which i actually support cause…
The operation on his brain and the first love is FL told by her also messed up the things for ML mind. Only rejuvenating past memories would be the only choice. Without his consent that operation conducted, FL also part of that project. It's all started with the memories eraser operation. She partly or fully responsible for current problems.
How is she supposed to keep it professional when even after hurting him with words which i actually support cause…
Two characters are wrong in their own way. One is professional wise, one is obsession/ personal wise. Thus, two need massive character development. I already wrote that in my comment.
What will be reason ML kicked out him the house?. Rather than a business failures, it has strong reason behind for kicked out the family. His daughter acts like an arch enemy seen in her infront of her eyes after presents of ML.
Unbearable FL, she already made a mistake but insists on doing that, the emotional level as a doctor she is rearward, she hurting ML with words. ML chasing first love needs to stop, a positive growth and self-healing character improvement need to be wants from his side.
"Sometimes ML 's side has problems, he overly involving FL issues, he only lost memories not consciousness. He crossing her personal boundaries, they are not couple or not in a relationship or not even a friend. Therefore, first he must stay his personal space not incursion into her privacy and freedom."
However, the SML has started the feelings for FL. It's very uncessary for a story point of view, the trope can't give any special advantage for the show. Writer will be destroy the core element because of the love triangle. SFL rarely seen in the 4 episodes, the involvement of this character which wanted to expand further episodes.
Preview of EP 4 kind of decisive, ML brother, is he has any feelings brewing to FL ? Writer already introduced the SFL character, and another any chance to cliche love triangle?? If introduce love triangle, the last good positive thing would end.
ML mom still trash 🗑️, her character traits not improved throughout the year. A money minded person chases the fame.
Some preview scenes of EP 5 missing in the EP 6, especially the hugging part of Sml. ML mom creating ruckus in the realtionship between the two leads. Moreover, two unlikable characters, first is obviously the SML and secondly ML mother. They just started their relationship, the strong bond between creating takes time or might be they breakup. However, this is a simple clichè drama and it would have been happy ending.
The Ep 6 will be hard, ex boyfriend litterly hugged her in the promo. If Hong Ju not really over her aka first love, and ML and FL also started their relationship. In contrast,from ML perspective its hard for him, his girlfriend hugged by Ex boyfriend and she really concerned about him. SML annoying as hell, without explanations he dumped her and the present situation he crying like a baby for already created mess.
EP 16 was pointless, especially the ending they end up together technically happy ending; even though it's felt like incomplete picture. No remorse from the FL side and ML accepted her as a typical as usual in k drama fantasy land doesn't hold accountable for actions.o Moreover, it's ML and FL actors are not the main centre of attraction and Star ⭐ from this entire DRAMA, it's "Lee Jung Jun", the whole story depends on her. She is carried the story,the main leads connected with her storyline. Overall, uncessary romance and illogical breakup, the writer invested in crime-investigation plot it would have been better rather than writes whatever for ending.
A cliche illogical breakup from FL, k dramas writers wired for excute this kind of last minute breakup. FL has no faith in her relationship, a problem arises she call for breakup, dump and stupid FL. In EP 15 preview of 16, they getting back together might be in the last 10-15 minutes. I wish they don't get together, FL doesn't deserve that. ML can find another love, he is a eligible bachelor and in society he has reputable position.
I'll keep watching this for the ML. He's gorgeous and his personality is hilariously bad now! 🤡The rest of…
ML character development needs time, but for now it's completely a ML clown 🤡 show tangled with first love memories. The writer doesn't dragging the plot we can see mature side of the ML will sooner.
ML mother absolutely selfish person, besides favouritism she disregarded her own son. FL upcoming path will not easy untill ML unfold the truth. The stories get more serious wait for almost first half of the series or after 8 episodes.
These kind of stories packed already known or we seen in the other stories ingredients were included in this drama. Extra martial affair, revenge, murder,..etc., extra martial affair, revenge main tropes in this drama, Seo Ji Yeon character is very uncessary side character. She didn't contribute any for the storyline. An interesting plot present would good but it's half baked.
ML parents and brother absolutely disgusting characters. The FL went over for a mouse and giving the nasty speech on ML without knowing his condition, is she a real doctor or a dumb? She can't identify a person condition.
K-Drama 
Only one time sfl and ML met, they need a screen time for compensate the gap between SML and FL screen time.
ML starting to recall his memories, he suspicious about Shin, not concrete belief about the Shin.
Hong Ju knew Hoo Yeong going to US; however, she immersed into full night over work and didn't have time for bat an eye for check phone calls. Moreover, suddenly the airport scene and finally they met in the airport scene, kiss and travel together to US.
Overall, good for watch: writer didn't dragging the plot for creating uncessary conflicts,and the mother character has bit annoyance. The ending of the drama needs a detailed conclusion even though it's happy ending, but got a half baked ending.
Byeon Mi Rae is angry and filled with hatred to some extent, which could be justified. However, when she told her father "from now on, she considers him dead," it crossed the line of her words a bit.
Only rejuvenating past memories would be the only choice. Without his consent that operation conducted, FL also part of that project. It's all started with the memories eraser operation. She partly or fully responsible for current problems.
One is professional wise, one is obsession/ personal wise. Thus, two need massive character development.
I already wrote that in my comment.
Rather than a business failures, it has strong reason behind for kicked out the family. His daughter acts like an arch enemy seen in her infront of her eyes after presents of ML.
ML chasing first love needs to stop, a positive growth and self-healing character improvement need to be wants from his side.
"Sometimes ML 's side has problems, he overly involving FL issues, he only lost memories not consciousness. He crossing her personal boundaries, they are not couple or not in a relationship or not even a friend. Therefore, first he must stay his personal space not incursion into her privacy and freedom."
However, the SML has started the feelings for FL. It's very uncessary for a story point of view, the trope can't give any special advantage for the show. Writer will be destroy the core element because of the love triangle.
SFL rarely seen in the 4 episodes, the involvement of this character which wanted to expand further episodes.
If introduce love triangle, the last good positive thing would end.
ML mom still trash 🗑️, her character traits not improved throughout the year. A money minded person chases the fame.
ML mom creating ruckus in the realtionship between the two leads. Moreover, two unlikable characters, first is obviously the SML and secondly ML mother.
They just started their relationship, the strong bond between creating takes time or might be they breakup.
However, this is a simple clichè drama and it would have been happy ending.
In contrast,from ML perspective its hard for him, his girlfriend hugged by Ex boyfriend and she really concerned about him.
SML annoying as hell, without explanations he dumped her and the present situation he crying like a baby for already created mess.
Moreover, it's ML and FL actors are not the main centre of attraction and Star ⭐ from this entire DRAMA, it's "Lee Jung Jun", the whole story depends on her. She is carried the story,the main leads connected with her storyline.
Overall, uncessary romance and illogical breakup, the writer invested in crime-investigation plot it would have been better rather than writes whatever for ending.
The writer doesn't dragging the plot we can see mature side of the ML will sooner.
FL upcoming path will not easy untill ML unfold the truth. The stories get more serious wait for almost first half of the series or after 8 episodes.
Extra martial affair, revenge, murder,..etc., extra martial affair, revenge main tropes in this drama, Seo Ji Yeon character is very uncessary side character. She didn't contribute any for the storyline. An interesting plot present would good but it's half baked.