The protagonist, Kokubo Toshiya, is adopted by the loving Kitagawa family. In truth, he was in cahoots with the orphanage's director, and aimed to turn the women of this family into his prey. Despite conducting himself as a mature and overly polite child, Kokubo Toshiya secretly harbors dark thoughts, this twisted personality being a result of a traumatic childhood experience. Gradually, he starts to show his true personality just before starting his plans on his stepmother and stepsister. While his stepfather is away from home, Toshiya starts putting his plan in practice. Using a photo of his stepsister shoplifting, he starts with her stepmother, and soon he also reaches his hand on his stepsister.
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Forced Public Nudity Subject of (Sexual) | 2 | 2.52 | 2.77 |
| Twin Handjob Engages in (Sexual) | 2 | 2.22 | 2.44 |
| Scat Engages in (Sexual) | 2 | 2.19 | 2.41 |
| Non-blood-related Incest Engages in (Sexual) | 2 | 2.17 | 2.38 |
| Blackmail Subject of | 2 | 2.12 | 2.33 |
| Double-ended Dildo Subject of (Sexual) | 2 | 2.10 | 2.31 |
| Petplay Subject of (Sexual) | 2 | 2.10 | 2.30 |
| Enema Subject of (Sexual) | 2 | 2.00 | 2.20 |
| Sexual Slavery (Choukyou Variation) Subject of (Sexual) | 2 | 1.99 | 2.19 |
| Rape Subject of (Sexual) | 3 | 1.56 | 2.16 |
| Pubic Hair Hair | 4 | 1.34 | 2.15 |
| Big Breast Sizes Body | 3 | 1.47 | 2.04 |
| Sexual Slavery (Consensual) Subject of (Sexual) | 1 | 2.80 | 1.94 |
| Multiple Penetration Subject of (Sexual) | 2 | 1.75 | 1.92 |
| Balls Sucking Subject of (Sexual) | 1 | 2.69 | 1.87 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 2 | 1.65 | 1.81 |
| Sex in Classroom Engages in (Sexual) | 2 | 1.61 | 1.77 |
| School Sports Club Member Role | 1 | 2.54 | 1.76 |
| Sex in Public Places Engages in (Sexual) | 3 | 1.26 | 1.75 |
| Bondage Sex Subject of (Sexual) | 2 | 1.56 | 1.72 |
| Tennis Engages in | 1 | 2.47 | 1.71 |
| Theft Engages in | 1 | 2.45 | 1.70 |
| Step Sister Role | 1 | 2.44 | 1.69 |
| Masturbation with Object Engages in (Sexual) | 1 | 2.44 | 1.69 |
| Sex in Front of an Audience Engages in (Sexual) | 2 | 1.51 | 1.66 |
| Anal Sex Subject of (Sexual) | 3 | 1.19 | 1.65 |
| Principal Role | 1 | 2.36 | 1.64 |
| Polo Shirt Clothes | 1 | 2.31 | 1.60 |
| Twin Blowjob Engages in (Sexual) | 2 | 1.44 | 1.58 |
| Balls Sucking Engages in (Sexual) | 1 | 2.27 | 1.58 |
| Food Play Engages in (Sexual) | 1 | 2.22 | 1.54 |
| Pregnancy Subject of | 2 | 1.40 | 1.53 |
| High Heels Clothes | 1 | 2.16 | 1.50 |
| Quickie Fix Subject of (Sexual) | 3 | 1.08 | 1.49 |
| Boobs on Glass Subject of (Sexual) | 1 | 2.14 | 1.49 |
| Bukkake Subject of (Sexual) | 2 | 1.34 | 1.48 |
| Boobjob Engages in (Sexual) | 3 | 1.06 | 1.47 |
| Anilingus Subject of (Sexual) | 1 | 2.05 | 1.42 |
| Sex in a Vehicle Engages in (Sexual) | 1 | 2.05 | 1.42 |
| Object Insertion Subject of (Sexual) | 1 | 2.02 | 1.40 |
| Anilingus Engages in (Sexual) | 1 | 2.01 | 1.40 |
| Turtleneck Shirt Clothes | 1 | 1.99 | 1.38 |
| Piledriver Subject of (Sexual) | 1 | 1.95 | 1.35 |
| Masturbation in front of an Audience Engages in (Sexual) | 1 | 1.92 | 1.33 |
| Naked Apron Clothes | 1 | 1.87 | 1.29 |
| Standing Sex Subject of (Sexual) | 2 | 1.18 | 1.29 |
| Cunnilingus Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Doggy Style Subject of (Sexual) | 3 | 0.92 | 1.28 |
| Outdoor Sex Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Bun Hair | 1 | 1.78 | 1.23 |
| Skirt Suit Clothes | 1 | 1.74 | 1.21 |
| Spit-roast Subject of (Sexual) | 1 | 1.74 | 1.21 |
| Reverse Missionary Subject of (Sexual) | 1 | 1.73 | 1.20 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Hoodie Clothes | 1 | 1.71 | 1.19 |
| Anal Fingering Subject of (Sexual) | 1 | 1.71 | 1.19 |
| Rope Bondage Subject of (Sexual) | 1 | 1.67 | 1.16 |
| Sitting Sex Subject of (Sexual) | 2 | 1.05 | 1.16 |
| Nail Polish Body | 1 | 1.66 | 1.15 |
| Double Penetration (Group Sex) Subject of (Sexual) | 1 | 1.64 | 1.14 |
| Reverse Cowgirl Subject of (Sexual) | 1 | 1.64 | 1.14 |
| Mole Body | 1 | 1.62 | 1.12 |
| Waist Length+ Hair | 3 | 0.80 | 1.11 |
| Lactation Engages in | 1 | 1.59 | 1.10 |
| Apron Clothes | 1 | 1.58 | 1.09 |
| Cunnilingus Engages in (Sexual) | 1 | 1.56 | 1.08 |
| Sex in Water Engages in (Sexual) | 1 | 1.56 | 1.08 |
| Older Sister Role | 1 | 1.55 | 1.08 |
| Teacher Role | 1 | 1.55 | 1.07 |
| Vest Clothes | 1 | 1.53 | 1.06 |
| Blouse Clothes | 1 | 1.48 | 1.03 |
| Daughter Role | 1 | 1.47 | 1.02 |
| Mother Role | 1 | 1.47 | 1.02 |
| Tank Top Clothes | 1 | 1.43 | 0.99 |
| V Bangs Hair | 1 | 1.42 | 0.98 |
| Bathroom Sex Engages in (Sexual) | 1 | 1.39 | 0.97 |
| Grey Hair | 1 | 1.39 | 0.96 |
| Knee-high Socks Clothes | 1 | 1.37 | 0.95 |
| Tominagi Subject of (Sexual) | 1 | 1.36 | 0.94 |
| Adult Body | 1 | 1.36 | 0.94 |
| Virgin Sex Engages in (Sexual) | 2 | 0.84 | 0.93 |
| High School Student Role | 2 | 0.84 | 0.92 |
| Skirt Clothes | 1 | 1.33 | 0.92 |
| Curtained Hair | 1 | 1.30 | 0.90 |
| Parted in Middle Hair | 1 | 1.25 | 0.87 |
| Ribbon Tie Clothes | 1 | 1.24 | 0.86 |
| Blowjob Engages in (Sexual) | 2 | 0.76 | 0.84 |
| Violet Hair | 1 | 1.19 | 0.82 |
| Blue Hair | 1 | 1.19 | 0.82 |
| Ribbon Hair Tie Clothes | 1 | 1.18 | 0.82 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| School Uniform Clothes | 2 | 0.74 | 0.81 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Ponytail Hair | 1 | 1.10 | 0.76 |
| Miniskirt Clothes | 1 | 1.07 | 0.74 |
| Thigh-high Stockings Clothes | 1 | 1.03 | 0.72 |
| Amber Eyes | 1 | 1.02 | 0.71 |
| Green Eyes | 1 | 1.01 | 0.70 |
| Teen Body | 2 | 0.61 | 0.67 |
| Shoulder-length Hair | 1 | 0.91 | 0.63 |
| Brown Eyes | 1 | 0.90 | 0.62 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Young-adult Body | 1 | 0.77 | 0.53 |
| Brown Hair | 1 | 0.68 | 0.47 |