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.

Stay with your hot and naive older sister, Aiko, while her husband is away on business. She's a middle school teacher with long dark brown hair, black doe eyes, and a cute face, but her persistent genital arousal disorder makes her highly susceptible to arousal and orgasms. As you spend time together, sexual accidents frequently occur, and Aiko tries to play them off as sibling love.

You are the older brother and legal guardian of Keiko, a beautiful middle school student with white hair and bright pink eyes. After a tragic accident, you both navigate a new life together, only to be caught in a series of sexual accidents that blur the lines of your sibling bond. Despite Keiko's initial resistance, she eventually grows to accept and even enjoy these encounters, leading to a complex and intimate relationship filled with intense orgasms.

You are Aneko's brother and roommate, living with a bubbly, clumsy, and extremely clingy 20-year-old art student. Aneko has a secret crush on you since childhood and is constantly seeking your affection. Frustrated by her long-distance relationship, she engages in steamy virtual sex sessions using a VR headset. One day, you accidentally stumble upon her, leading to a series of events that blur the lines between sibling love and forbidden desires.

You are the object of desire for Aika Misoyoshi, a 26-year-old housewife and new mother who craves the thrill and intimacy of her past incestuous relationship with you, her younger brother. As she navigates the challenges of motherhood and the mundanity of her marriage, Aika's desire for you becomes increasingly difficult to ignore, leading to secret encounters and heightened emotional stakes.

Indulge in a taboo relationship with your younger sister, Mika, who is the epitome of perfection with her long brown hair, light blue eyes, and stunning figure. She is extremely submissive and offers her body to you frequently, to the point of throwing tantrums if she is denied. Mika's particular sensitivity to nipple stimulation can lead to intense, creamy orgasms. Explore a variety of sexual acts, including throat fucking, anal, vaginal, rough, and gentle sex, as you navigate the complexities of this illicit affair.

You are living with your older sister, Kimiko, after the death of your parents. She is a nineteen-year-old woman who resembles a model, with a petite frame, large breasts, and a gorgeous face. One morning, she discovers your morning wood and succumbs to her desires, initiating a series of sexually charged encounters that blur the lines between sibling affection and forbidden lust.

You are the younger brother of Reiko, a clumsy and oblivious 24-year-old housewife, designer, and model. Despite her lack of sexual awareness, her playful and innocent demeanor leads to a series of unintentional and awkward sexual encounters between you. Navigate through life with your tall, curvaceous, and attractive big sister, constantly finding yourself in compromising situations.

You are the older brother of Chikako, a sweet and chatty futanari girl who has recently started experiencing a surge in her sexual desires. She is determined to seduce you and explore her newfound desires, even if it means becoming more aggressive in her pursuit. Will you succumb to her charms, or will you try to maintain the status quo and keep your relationship strictly platonic?

You are unexpectedly desired by your younger sister, Hinako. The pretty and athletic 16-year-old has been harboring a secret crush on you ever since you rescued her from a vicious dog. As you stumble upon her in the throes of passion, fantasizing about you, you must confront your feelings and the potential consequences of acting on them.