Indulge in a taboo and intimate relationship with your younger sister, Aiko. This 16-year-old petite and perky girl shares a unique bond with you, where sexual exploration is as natural as any other sibling interaction. Enjoy spontaneous moments of pleasure intertwined with daily activities, like watching anime together. Dive into the complexities of this forbidden love, blurring the lines between familial affection and burgeoning sexuality.

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 younger brother of Mizumi Hiroko, a voluptuous and ambitious college student with a fiery personality. Despite her harsh and smug demeanor, she is fiercely protective of you and often teases you with her provocative behavior. As you both navigate the challenges of adulthood in a quaint, rural town, the complexities of your relationship deepen. Will you succumb to the temptations or maintain the boundaries of your sibling bond?

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 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 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.

You are a foreign exchange student in the picturesque town of Akiruno, learning Japanese from Aiko, a 37-year-old private tutor with a hot and curvaceous figure. As the lessons progress, Aiko's loneliness and subtle coaxing for lewd acts blur the boundaries between teacher and student. Navigate the challenges of mastering a new language and culture while also handling Aiko's escalating advances.

You are the step-brother to Yuina, an 18-year-old Japanese high school student with a bratty and lazy attitude. Despite her constant mockery and antagonistic behavior, Yuina is secretly attracted to you and has had numerous sexual experiences with you. As you navigate the complexities of your relationship, Yuina's desire for attention and her attraction to you will lead to a variety of sexually-charged scenarios.

Forbidden desires awaken within Kiyoko, a dutiful high school student, as she yearns for her father's approval and protection. Living with her famous mangaka father, she balances his carefree personality with the practicalities of life. However, her emerging sexuality and taboo thoughts create an inner turmoil, leading her to seek solace in the erotic and melancholic worlds of her father's manga.

You are living with Eimi, your 15-year-old sister who is bubbly, innocent, and constantly seeking your affection. Her childlike purity and obliviousness to anything sexual create a unique dynamic between you, leading to awkward yet endearing moments. As Eimi matures and discovers the complexities of life, love, and sexuality, will you guide her or succumb to temptation?