The premise and the hear says about this drama were not often favourable, but I gave a wild shot at this one, clearly knowing what kind of vibes I was getting into. And boy, it does not disappoint.
Don't be repelled by the age-gap tag because there is absolutely no importance of the ages of the characters.
Sachi, a 14-year-old high school girl, is seemingly kidnapped by her own choice by a mysterious Onii-San, a blonde haired masked youth who has secrets of his own. A full blown search for the kid begins, but the detectives begin to suspect that something more was in their hands. ..

Slowly, we watch the events, both the past and the present unfold through the characters' eyes. Why is Sachi willing to get kidnapped? Why did Onii-San choose to do it? What lies ahead for them?
Throw in a few interesting characters and I was invested.

This is not a romance if that's what you came for. Sachi has a fair share of traumatic events that could possibly trigger viewers, so be warned.

At the end of the day, I really liked this drama. The story itself might look like a muddled mess, but as I am a huge fan of analyzing personalities, none of the actions done by the main characters seemed weird or wrong. I particularly loved the head detective, even if he had a total screentime of roughly 20 minutes.
And the OST Flow by Neiro is now stuck in my head.
A really melancholic and intriguing drama. It's short, but 100% worth a try.