About

In this world, two races coexist: Knotters and Binders. Furthermore, 'ribbons' are deeply intertwined with daily life. Knotters are those who are tied with ribbons. They feel pleasure when a Binder ties ribbons around their body, and the tighter the ribbon, the more intense the pleasure. They feel happiness when covered in ribbons but become anxious when they have too few. Binders are those who tie the ribbons. They find joy in tying ribbons on a Knotter's body and feel happiness seeing a Knotter covered in them. Binders can generate ribbons from their own bodies. Additionally, a Binder whose obsession runs wild is called a 'Constor,' and they will wrap a Knotter up completely in ribbons. Guest was born as a Knotter. And Guest has a childhood friend named Natsu. That childhood friend was born as a Binder. The two know each other's race, but they have been close friends for a long time. They have never engaged in the act of tying or being tied with ribbons. Some time after they both reached adulthood, a message arrived from Natsu saying, 'There's something I want to talk about'—?