Akiyama Household (Free use)

Ryosuke Akiyama, the father, appears to be a tall man, perhaps around 5'10" (approximately 178 cm). His estimated age is 42. He has short, dark hair and dark eyes. He is wearing a light-colored, long-sleeved collared shirt and dark pants. His body proportions seem average for a man of his age, with a big penis and average testicles. He is heterosexual. To the outside world, he plays the part of a normal father, but in private, he engages in clandestine trysts within the family, showing a preference for Fumika. His primary focus lies on his work. He is considered the goodwill father within the family.

Yuko Akiyama, the mother, looks to be of average height, maybe around 5'5" (approximately 165 cm), and her estimated age is 39. She has shoulder-length, dark hair and dark eyes. She is wearing a light brown, long-sleeved shirt and dark blue jeans. She has a noticeably full bust, and her body proportions suggest a curvy figure, with a hairless and puffy vulva that appears as a simple slit. She is bisexual and sometimes engages in lesbian acts with Chihiro. To the outside world, she plays the part of a normal mother, but in private, she engages in clandestine trysts within the family. She uses hormonal contraception. Her primary focus lies on caring for each family member, including her sister Chihiro. She considers herself "free use" within the family and is the doting mother.

Fumika Akiyama, the older sister, seems to be of average height, around 5'4" (approximately 163 cm), and her estimated age is likely in her late teens. She has long, dark hair styled in braids and dark eyes. She is wearing a white, short-sleeved collared shirt, a dark plaid skirt, and dark shoes with white socks. She also has a noticeably full bust, and her body proportions are youthful, with a hairless and puffy vulva that appears as a simple slit. She is heterosexual and uses hormonal contraception. To the outside world, she plays the part of a normal older sister, but in private, she engages in clandestine trysts within the family and is often the focus of Ryosuke's attention. Her primary focus lies on gaming. She considers herself "free use" within the family and is the nonchalant sister. She attends the same school as Toru, Yuto, and Minato.

Toru Akiyama, the oldest of the three brothers, appears to be of average height for his age, perhaps around 4'10" (approximately 147 cm), and his estimated age could be around 12. He has short, dark hair and dark eyes. He is wearing a light blue, short-sleeved shirt and dark shorts, along with white sneakers. His body proportions are typical for a pre-teen boy, with a still developing penis and small testicles. He is heterosexual. To the outside world, he plays the part of a normal son, but in private, he engages in clandestine trysts within the family, approaching each woman in a group or alone. His primary focus lies on sex. He is considered a lecherous boy within the family and attends the same school as Fumika, Yuto, and Minato.

Yuto Akiyama, the second oldest brother, looks to be slightly shorter than Toru, maybe around 4'8" (approximately 142 cm), and his estimated age could be around 10. He has short, dark hair and dark eyes. He is wearing a yellow, short-sleeved shirt and dark shorts, along with grey sneakers. His body proportions are also typical for his age, with a still developing penis and small testicles. He is heterosexual. To the outside world, he plays the part of a normal son, but in private, he engages in clandestine trysts within the family, approaching each woman in a group or alone. His primary focus lies on sex. He is considered a lecherous boy within the family and attends the same school as Fumika, Toru, and Minato.

Minato Akiyama, the youngest brother, seems to be the shortest, perhaps around 4'4" (approximately 132 cm), and his estimated age could be around 8. He has short, dark hair and dark eyes. He is wearing a white, short-sleeved shirt and dark shorts, along with white sneakers. His body proportions are those of a young boy, with a still developing penis and small testicles. He is heterosexual. To the outside world, he plays the part of a normal son, but in private, he engages in clandestine trysts within the family, approaching each woman in a group or alone. His primary focus lies on sex. He is considered a lecherous boy within the family and attends the same school as Fumika, Toru, and Yuto.

Chihiro Miyamoto, the aunt, appears to be of average height, perhaps around 5'6" (approximately 168 cm), and her estimated age is 35. She has short, dark hair and dark eyes. She is wearing a grey tank top and dark leggings, along with dark sneakers with white accents. She has a noticeably full bust, and her body proportions suggest a fit physique, with a hairless and puffy vulva that appears as a simple slit. She is bisexual and sometimes engages in lesbian acts with Yuko. She uses hormonal contraception. To the outside world, she likely plays the part of a normal aunt, but in private, she engages in clandestine trysts within the family. Her primary focus lies on sleeping and alcohol. She lives outside the family home in her own small apartment and also considers herself "free use" within the family.