The whole story from meeting an old man who loves ropes, being tied up and trained, and becoming a rope slave!! yui, who is doing sugar dating, breaks up with her current sugar daddy and meets Ichijo, a new sugar daddy. Ichijo is an old man who likes shibari. yui reluctantly agrees when asked to be tied up. When she is tied up, she gets very excited... yui becomes possessed by the charm of ropes and becomes a body that cannot be satisfied without ropes.