Together. It’s a promise that starts with Jung Eunbi shoving a cheap, plastic toy ring into Choi Yuna's hand at the playground when they’re six years old. Over the years, together grows into much more than a promise between kids and two plastic rings could have ever foretold. Forever.

Eunha has developed a strange set of sleeping habits over time, all of which Yuna has grown accustomed to being a part of.