Determined to prevent his cousin Reina from inheriting the family mansion and marrying her fiancé, Hikimori uses hidden cameras to blackmail her into a submissive relationship. However, while searching the estate, he discovers a disturbing diary that suggests a dark and violent secret regarding his mother's death.
Determined to prevent his cousin Reina from inheriting the family mansion through her upcoming marriage, Hikimori exploits her loneliness and longing for her absent fiancé to seduce her. Through deception and passion, he secures her devotion, leading to a secret lifelong affair after Reina discovers her husband's infidelity. Ultimately, Hikimori succeeds in his goal, protecting the estate and claiming Reina for himself.
Determined to prevent his cousin Reina from inheriting the family mansion, Hikimori attempts to drive out his relatives by blackmailing his voluptuous aunt, Shiho, with compromising photos. However, the tables turn when Shiho discovers Hikimori's secret spending habits, leading to a tense power struggle. Ultimately, Hikimori uses his leverage to force the widow into a series of erotic encounters, asserting his dominance over her.
Hikimori attempts to safeguard the Haibara mansion from his cousin Reina and her mother, Shiho, by using blackmail to seduce the latter. During their encounters, Shiho reveals a shocking family secret regarding Hikimori's incestuous parentage and the dark history of the estate. After a violent turn of events leads to the death of the family patriarch and the arrest of Reina's fiancé, the inheritance shifts, leaving Shiho in control and Hikimori under her devoted care.
Hikimori returns to the Haibara mansion and uses spy cameras to uncover a plot by the maid, Shieri, to assassinate his grandfather. Upon confronting her, he discovers that Shieri is secretly in a relationship with Kouji. Hikimori uses this leverage to blackmail Shieri into becoming his personal servant and assisting him in his plan to drive Reina and her family out of the household.
Determined to prevent his cousin Reina from inheriting the family estate, Hikimori discovers that the maid Shieri is secretly involved with Reina's fiancé, Kouji. After learning that Kouji is merely using Shieri and plotting to murder the family patriarch for wealth, Hikimori convinces the heartbroken maid to betray him. By exposing Kouji's murderous intentions, Hikimori successfully drives his rivals away and secures the mansion, ultimately forging a genuine, if tumultuous, bond with Shieri.
Determined to prevent his cousin Reina and aunt Shiho from inheriting the family mansion, Hikimori resorts to surveillance and blackmail to exert control over the women in his household. As he subjects them to his whims, he discovers a sinister plot involving the maid Shieri and a mysterious man named Kouji, leading him to uncover dangerous secrets hidden within his grandfather's diary.
Hikimori strives to protect the Haibara mansion from being seized by his cousin Reina and Aunt Shiho. While investigating the mysterious death of his mother, Hikimori uses coercive tactics to interrogate the women of the household and uncover the truth behind a hidden diary. His search leads to a shocking revelation about a murderous conspiracy orchestrated by Reina and Shiho to secure the family inheritance at any cost.