Aika grew up in a wealthy family, wanting for nothing. At her parents' suggestion, she married an older man and led a mundane daily life. One day, a high school classmate introduced her to 'papa-katsu,' and out of a slight curiosity, she arranged to meet a man she had been in contact with. Despite feeling guilt, her excitement and unease heightened. When she met the man again, he, who had been kind, tied Aika up with rope. Initially, she had only sought a bit of stimulation out of curiosity, but before she knew it, she was drawn in deeply...
