A story that inspired from the infamous Utada Hikaru's song "First Love", where the two main lead are each other first love who met during their high school day but seperarted because of unexpected event. They met again 20 years later where the female lead already a single mother and the male lead engaged to someone. Actually what's so painful from their seperation is the "amnesia trope" where the female lead couldn't remember the male lead at all. It's breaking my heart. Their journey to find each other again is so long, but worth waiting. For someone who love Hikaru and Takeru, I think their screentime are too short compared to their younger counterpart. But, I really enjoyed this drama. And Hikki's song really hit differents after watching this drama!!