[Yahiro Mai [Bound and SM Unveiled] Mai wants to attend the same university as her mother. With this dream in mind, she devotes herself to calligraphy in order to pass the entrance exam for a talent school. After her mother passed away, her father had fallen behind, so she thought seriously about her future, saying, "I have to do something about it." But one day, she is suddenly approached by an old man she has never seen before, and her life begins to go awry. A future she never wanted, planned by filthy adults. Day after day, she is taught the joys of training...