Startup is the kind of series that leaves you with that lingering feeling even after it ends. The casting is spot-on, with every character fitting in perfectly. Even though the Sandbox doesn't exist, the series makes it feel like it does. Every character has a backstory that has been presented in a very natural way. This applies to the story of the Sandbox's creation itself.
But what most folks overlook is the show's original soundtrack and background music. I'm really new to Korean dramas, but I was blown away by choice of music and background score. The sound renders perfectly in some of the scenes. Although Netflix hasn't announced anything, some folks like me are desperately hoping for a second season.