Yuri, an innocent young lady raised in a wealthy family, and her kind butler, who secretly harbors desires, spend their forbidden days together. When her parents go on a trip abroad, the two of them start spending their days alone together. Unable to resist Yuri's growing voluptuous body, the butler imprisons her in the storeroom. "Grandpa, what are you doing...?" Yuri is confused, but the butler obsessively trains her, one act at a time, each day. Kissing, caressing, incontinence, and intercourse... Before long, Yuri is consumed by her acts with the old man, and begins to open up to Kokoro. #BanchoP