Someday or One Day begins it's journey as a regular contemporary romance drama with a tragic twist: Huan Yu Xuan, the FL's person (Wang Quan Shen) has been dead since the past two years after a plane crash. HYX struggles to get past his demise and seeks out for hints that proves that he wasn't too much in love with her in an attempt to get a leverage to let go of him, despite imagining him multiple times. What she discovers only makes her drop back to square one. It is at this time that she gets a Walkman from an anonymous person. And from there stars the real story…

☆ The drama unexpectedly takes a smooth twist into the time travelling genre and for a while, I believed that it was just some minor fantasy element. But, no. It was an actual time travel element that had blood and bones. The characters, their choices and the whole time travelling governs the basic plot. We are pulled into a maze of events that talk about the past, or rather the past of a young introverted girl, Chen Yun Ru, and her friends Li Zi Wei and Mo Jun Jie. The only thing in common is that Chen Yun Ru and Li Zi Wei are doppelgangers of the future Huan Yu Xuan and Wang Quan Shen. Time travelling to another timeline, into another completely different person comes with a few setbacks. Huan Yu Xuan soon learns from the future that she must protect herself from a mysterious stalker and try to stop Chen Yu Ru's fate: dead by the New Year's eve of 1999. Moreover, she finds out that there exists a deeper connection the past and her future.

But, is changing the future as easy as it seems?

☆ The plot was meticulously written with a strong purpose. It tried closing off all loopholes and giving us convincing answers. I could visualize the time loop that writer had written the story with. One factor that made me not find the drama boring was the variety of characters. We spend significant screentime with closed off Chen Yu Ru and the kind hearted Mo Jun Jie. We get to know Chen Yu Ru's family and her troubles. We are delighted to see the way Huan Yu Xuan deals with situations and her vibrant personality. Her friendship with Mo Jun Jie and Li Zi Wei was a treasure to cherish. The actors performances were excellent, particularly Alice Ke, for her portrayal of the two starkly contrasting characters with precision.

We get heartbroken seeing Wang Quan Shen and his relationship with Huan Yu Xuan. There was a point where I could not see a happy ending for anyone. Time travel rarely ends up with roses, but more with roses 'and' thorns. I guessed a few minor events before it happened, but the way it was executed was smooth and realistic.

☆ The opening, closing credits' and their soundtracks captured the emotions of the drama perfectly. They implied a lot about what was going to happen in the drama at the first place, but we don't understand the symbolism behind it until we've completed about more than half of the episodes. Also, I'm not a fan of songs of the genre such as Wu Bai's 'Last Dance'. But, this drama forced me to like it.

☆ One thing that irked me was how I fell asleep multiple times, particularly during the initial episodes. Though the slow pace was essential for capturing the viewers and setting the base for the story, it made me wish that it was a tad bit more fast paced.

All in all, this is definitely a drama that you should give a try, particularly, if you are a fan of romance and time travel genre. I loved piecing together the puzzles and guessing what was about to happen. I wished for every single characters' happiness by the end. I too hope I'll meet someone someday who would also come back to me one day.