Sakura Moko's first confinement training work! Moko, the niece, often stays over at her uncle's house due to their close relationship, and even supported her idol activities despite family opposition. However, as her idol activities grew busier and they spent more days apart, her uncle's overly strong love for Moko gradually turned into jealousy... and possessiveness. Then, to make Moko his own by restraining and confining her, he repeatedly engages in obscene forced impregnation sex...