セックスに溺れてマゾに目覚めるまでの2年間の調教記録。

Nanami is in a toxic relationship with Sagawa, in which she gradually begins to get addicted to masochism. Sagawa fucks Nanami mercilessly and cums inside her. He then gives her the pill to further humiliate her. A very broken Nanami gets walked like a dog. She enjoys the humiliation. Nanami and Sagawa meet in a restaurant bathroom for a quickie. She swallows the load wholly.