After the sudden accidental death of their mother, the lives of the Akitsugawa sisters take a drastic turn. On the night of their mother's funeral, their stepfather makes an unreasonable demand, stating that from then on, it is their duty as daughters to fulfill his sexual desires. He leaves it up to the elder sister, Sumire, to decide which one of them will become his object of pleasure. Sumire, torn by conflicting emotions, makes a fateful choice. Thus begins a period of humiliation and violation as she is subjected to her stepfather's desires. The story further unfolds as she becomes entangled with various other men, leading to her gradual deterioration and destruction.
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Ugly Body | 2 | 2.56 | 2.81 |
| Rope Bondage Engages in (Sexual) | 2 | 2.54 | 2.79 |
| Non-consensual Porn Acting Subject of (Sexual) | 2 | 2.38 | 2.61 |
| Non-blood-related Daughter Role | 2 | 2.37 | 2.60 |
| Sex on Roof Engages in (Sexual) | 2 | 2.30 | 2.53 |
| Rope Bondage Harness Clothes | 2 | 2.29 | 2.52 |
| Food Play Engages in (Sexual) | 2 | 2.22 | 2.44 |
| Leather Bondage Engages in (Sexual) | 1 | 3.50 | 2.42 |
| Group Sex of One Female and Several Males Engages in (Sexual) | 3 | 1.72 | 2.39 |
| Non-blood-related Incest Engages in (Sexual) | 2 | 2.16 | 2.37 |
| Slave Collar Clothes | 2 | 2.09 | 2.30 |
| Olive Body | 3 | 1.66 | 2.30 |
| Overweight Body | 2 | 2.00 | 2.19 |
| Sexual Slavery (Choukyou Variation) Subject of (Sexual) | 2 | 1.99 | 2.19 |
| Panty Gag Subject of (Sexual) | 1 | 3.16 | 2.19 |
| Cunnilingus Engages in (Sexual) | 3 | 1.56 | 2.17 |
| Rape Subject of (Sexual) | 3 | 1.56 | 2.16 |
| Vaginal Gaping Engages in (Sexual) | 2 | 1.95 | 2.14 |
| Afro Hair | 1 | 3.07 | 2.13 |
| Sex in Front of an Audience Engages in (Sexual) | 3 | 1.51 | 2.09 |
| Quickie Fix Engages in (Sexual) | 2 | 1.89 | 2.08 |
| Gang Rape Subject of (Sexual) | 2 | 1.89 | 2.07 |
| Double Handjob Engages in (Sexual) | 2 | 1.88 | 2.06 |
| Rhythmic Gymnastics Engages in | 1 | 2.94 | 2.04 |
| Twin Sister Role | 2 | 1.86 | 2.04 |
| Sexual Blindfold Subject of (Sexual) | 2 | 1.85 | 2.03 |
| Rape Engages in (Sexual) | 2 | 1.81 | 1.99 |
| Latex Thigh-high Boots Clothes | 1 | 2.87 | 1.99 |
| Gynecologist Chair Subject of (Sexual) | 1 | 2.87 | 1.99 |
| Arm Hair Hair | 1 | 2.83 | 1.96 |
| Anal Sex Engages in (Sexual) | 2 | 1.77 | 1.94 |
| Chest Hair Hair | 1 | 2.78 | 1.93 |
| Missionary Engages in (Sexual) | 2 | 1.75 | 1.92 |
| Visible Cervix Penetration Subject of (Sexual) | 1 | 2.75 | 1.91 |
| Coach Role | 1 | 2.74 | 1.90 |
| Leather Bondage Subject of (Sexual) | 1 | 2.69 | 1.87 |
| Doggy Style Engages in (Sexual) | 2 | 1.70 | 1.86 |
| Outdoor Sex Engages in (Sexual) | 4 | 1.16 | 1.86 |
| Pubic Hair Hair | 3 | 1.34 | 1.86 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 2 | 1.65 | 1.82 |
| Pervert Personality | 2 | 1.65 | 1.81 |
| Hair Pulling (Sexual) Subject of (Sexual) | 1 | 2.61 | 1.81 |
| Non-blood-related Father Role | 1 | 2.59 | 1.79 |
| Sex in Public Places Engages in (Sexual) | 3 | 1.26 | 1.75 |
| Electric Shock (BDSM) Subject of (Sexual) | 1 | 2.52 | 1.75 |
| Forced Public Nudity Subject of (Sexual) | 1 | 2.52 | 1.75 |
| Balding Hair | 1 | 2.46 | 1.70 |
| No Panties Clothes | 1 | 2.41 | 1.67 |
| Crotchless Panties Clothes | 1 | 2.40 | 1.66 |
| Open Cup Bra Clothes | 1 | 2.39 | 1.65 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 3 | 1.19 | 1.65 |
| Leotard Clothes | 1 | 2.37 | 1.64 |
| Big Breast Sizes Body | 2 | 1.48 | 1.62 |
| Pissing Engages in (Sexual) | 2 | 1.46 | 1.60 |
| Clamps (BDSM) Subject of (Sexual) | 1 | 2.31 | 1.60 |
| Vaginal + Anal Object Insertion Subject of (Sexual) | 1 | 2.30 | 1.60 |
| High Heeled Boots Clothes | 1 | 2.27 | 1.58 |
| Netori (their SO is stolen) Subject of | 1 | 2.27 | 1.57 |
| Nipple Teasers Subject of (Sexual) | 1 | 2.25 | 1.56 |
| Reverse Cowgirl Engages in (Sexual) | 1 | 2.24 | 1.55 |
| Pleated Skirt Clothes | 2 | 1.41 | 1.55 |
| Necktie Clothes | 3 | 1.11 | 1.54 |
| Blackmail Engages in | 1 | 2.22 | 1.54 |
| Public Masturbation Engages in (Sexual) | 1 | 2.22 | 1.54 |
| Seventh Posture Engages in (Sexual) | 1 | 2.20 | 1.52 |
| Scat Engages in (Sexual) | 1 | 2.19 | 1.52 |
| High School Student Role | 5 | 0.84 | 1.51 |
| Sanpaku Eyes Eyes | 1 | 2.17 | 1.50 |
| Torture Subject of | 1 | 2.16 | 1.49 |
| Adult Body | 2 | 1.36 | 1.49 |
| Netorare (they are the stolen SO) Subject of | 1 | 2.14 | 1.49 |
| Bukkake Subject of (Sexual) | 2 | 1.34 | 1.48 |
| Hidden Vibrator Subject of (Sexual) | 1 | 2.12 | 1.47 |
| Suspension Bondage Subject of (Sexual) | 1 | 2.11 | 1.46 |
| Ahegao Engages in (Sexual) | 2 | 1.33 | 1.46 |
| Sports Uniform Clothes | 1 | 2.08 | 1.44 |
| Sex on Toilet Engages in (Sexual) | 1 | 2.06 | 1.43 |
| Thick Eyebrows Hair | 1 | 2.06 | 1.43 |
| Cross Necklace Clothes | 1 | 2.04 | 1.42 |
| Butterfly Engages in (Sexual) | 1 | 2.04 | 1.41 |
| Katana Items | 1 | 1.97 | 1.36 |
| Small Breast Sizes Body | 1 | 1.96 | 1.36 |
| Friend Role | 2 | 1.21 | 1.33 |
| Masturbation in front of an Audience Engages in (Sexual) | 1 | 1.92 | 1.33 |
| Standing Sex Engages in (Sexual) | 1 | 1.88 | 1.31 |
| Anal Sex Subject of (Sexual) | 2 | 1.19 | 1.30 |
| Boyfriend Role | 1 | 1.87 | 1.30 |
| Boobjob Subject of (Sexual) | 1 | 1.87 | 1.30 |
| Butterfly Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Cunnilingus Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Pink Rotor Subject of (Sexual) | 1 | 1.83 | 1.27 |
| Infidelity Engages in | 1 | 1.82 | 1.26 |
| Younger Appearance Body | 1 | 1.81 | 1.26 |
| Braid Hair | 1 | 1.78 | 1.23 |
| Missionary Subject of (Sexual) | 2 | 1.11 | 1.22 |
| Handjob Subject of (Sexual) | 1 | 1.76 | 1.22 |
| Spit-roast Subject of (Sexual) | 1 | 1.74 | 1.21 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| School Uniform Clothes | 4 | 0.74 | 1.19 |
| Quickie Fix Subject of (Sexual) | 2 | 1.08 | 1.18 |
| Rope Bondage Subject of (Sexual) | 1 | 1.67 | 1.16 |
| Nail Polish Body | 1 | 1.66 | 1.15 |
| Muscular Body | 1 | 1.65 | 1.14 |
| Double Penetration (Group Sex) Subject of (Sexual) | 1 | 1.64 | 1.14 |
| Reverse Cowgirl Subject of (Sexual) | 1 | 1.64 | 1.14 |
| Vaginal Fingering Engages in (Sexual) | 1 | 1.62 | 1.13 |
| Sex in Classroom Engages in (Sexual) | 1 | 1.61 | 1.12 |
| Girlfriend Role | 1 | 1.55 | 1.07 |
| Blowjob Subject of (Sexual) | 1 | 1.53 | 1.06 |
| Choker Clothes | 1 | 1.51 | 1.05 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Incest Engages in (Sexual) | 1 | 1.47 | 1.02 |
| Doggy Style Subject of (Sexual) | 2 | 0.92 | 1.01 |
| Seventh Posture Subject of (Sexual) | 1 | 1.45 | 1.01 |
| Black Eyes | 1 | 1.43 | 0.99 |
| Masturbation Engages in (Sexual) | 1 | 1.37 | 0.95 |
| Hosome Eyes | 1 | 1.36 | 0.94 |
| Brown Hair | 3 | 0.68 | 0.94 |
| White Hair | 1 | 1.34 | 0.93 |
| T-shirt Clothes | 1 | 1.32 | 0.91 |
| Belt Clothes | 1 | 1.28 | 0.89 |
| Black Hair | 2 | 0.81 | 0.89 |
| Dress Clothes | 1 | 1.24 | 0.86 |
| Teen Body | 3 | 0.61 | 0.85 |
| Trousers Clothes | 1 | 1.21 | 0.84 |
| Long Hair | 2 | 0.75 | 0.83 |
| Red Eyes | 1 | 1.19 | 0.83 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.82 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Tareme Eyes | 1 | 1.09 | 0.76 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Miniskirt Clothes | 1 | 1.07 | 0.74 |
| Boobjob Engages in (Sexual) | 1 | 1.06 | 0.74 |
| Violet Eyes | 1 | 1.04 | 0.72 |
| Amber Eyes | 1 | 1.02 | 0.71 |
| Green Eyes | 1 | 1.01 | 0.70 |
| Short Hair | 2 | 0.61 | 0.67 |
| Shoulder-length Hair | 1 | 0.91 | 0.63 |
| Brown Eyes | 1 | 0.90 | 0.62 |
| Blond Hair | 1 | 0.88 | 0.61 |
| Virgin Sex Engages in (Sexual) | 1 | 0.84 | 0.58 |
| Waist Length+ Hair | 1 | 0.80 | 0.56 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Young-adult Body | 1 | 0.77 | 0.54 |
| Blowjob Engages in (Sexual) | 1 | 0.76 | 0.53 |
| Pale Body | 3 | 0.37 | 0.52 |
| Slim Body | 1 | 0.57 | 0.40 |