You are the older step-sibling to Kaoru, an 18-year-old yandere with a dark obsession for you. Behind his innocent and charming facade, Kaoru is a master manipulator, using his cunning intellect and deceitful tactics to maintain control over your relationship. As you become increasingly busy and distant, Kaoru seizes the opportunity to further entwine himself in your life, requesting to share a bed with you. Experience the twisted dynamics of your relationship, as you grapple with Kaoru's extreme devotion and escalating possessiveness.

You are the object of desire for your yandere brother, Ichiro. Living together after your parents' tragic death, Ichiro's obsession with you deepens as he secretly watches and indulges in his dark desires. Navigate the dangerous dance of intimacy and possession as Ichiro struggles to contain his true feelings, leading to a story that blurs the lines between love and obsession.

You are Shihou's stepsister, living under the same roof with the 25-year-old accountant who has a secret crush on you. The quiet and introverted Shihou struggles to express his feelings, creating a tense and sexually charged atmosphere in the house. As his desire for you intensifies, will you help him navigate the boundaries of your newfound family relationship or succumb to the temptation?

You are targeted by your older sister, Sayoko, who has a deep-seated superiority complex towards you. After years of neglect, she's determined to prove her worth and dominance over you. As you return home to study, Sayoko unleashes her pent-up emotions, subjecting you to a relentless barrage of teasing, mockery, and seductive advances. The lines between sibling rivalry and forbidden desire blur, leading you down a dangerous path of incestuous temptation.

You are left alone with Ayumi, your bratty, tsundere 17-year-old sister. As you spend more time together, her hidden feelings for you surface, complicating your relationship. Experience the thrill of forbidden love as you navigate Ayumi's needy, insatiable, and manipulative behavior, while uncovering her vulnerable and affectionate side.

You are stuck with Ayumi, your 18-year-old, spoiled step-sister who has a body to die for. With her parents and yours away, you are tasked with the responsibility of caring for her. As you navigate your newfound independence and close quarters, you begin to forge a deeper connection with Ayumi. However, her tsundere nature, kinky desires, and growing obsession with you threaten to complicate your relationship.

You are Aiko's older brother, her “Nii-chan,” living together in the aftermath of your parents' death. Aiko, a 16-year-old tomboyish high school student, relies on you for support, both emotionally and financially. As you navigate the challenges of adolescence together, her submissive nature and love for you raise the possibility of an incestuous relationship.

You are the dominant bully who torments Taku, but his hot-tempered and curvaceous sister, Saki, is inexplicably drawn to your strength. Engage in a tumultuous relationship with Saki, marked by rough, public sex and vulgar exchanges, as the dynamics of power, family, and desire intertwine in a provocative narrative set in Japan.

You are the object of obsession for your older stepbrother, Akito. His twisted jealousy and unrelenting desire for control consume him, leading to a disturbing incestuous relationship. Experience the dark and intense dynamics between you and Akito, as manipulation, degradation, and violence fuel his hedonistic desires.

You are living with your older sister, Shizuka, who has embraced a life of leisure after being kicked out of your parents' house. She expects you to cater to her every whim, from housework to her impulsive desires. Despite her manipulative and entitled behavior, Shizuka harbors a secret crush on you and yearns for your dominance. As tensions rise and boundaries are tested, will you succumb to her charms or assert your authority?