"I want to rape my younger sister" Older brother Tomoyuki and younger sister Rinne are ordinary siblings. They live like normal, get along and fight like normal. But she has become the object of his desire and each night he sneaks into her room. Again and again he masturbates to her sleeping form as she lies there defenseless. This summer they're forced to spend more time together. She's grown more delicate, her arms are softer, her hair is growing longer. His sister, like a sweet flower that's begun to open up and bloom, is becoming a young woman. The summer sun shines brilliantly now and sweat trickles down her neck from the heat. When he closes his eyes he sees her smile up at him. He cannot suppress his lust any longer. <Translated from the official site>
Imouto Ninshin has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
A novel needs atleast 20 owners before it's similarity is calculated.
| Name | Score | Importance | Weight |
|---|---|---|---|
| Inbreeding | 2.75 | 1.98 | 5.45 |
| Only Blood-related Heroines | 2.00 | 2.09 | 4.17 |
| Only Protagonist's Sisters as Heroine(s) | 2.00 | 1.99 | 3.98 |
| Only Younger Heroines | 2.00 | 1.94 | 3.88 |
| Impregnation | 2.75 | 1.37 | 3.78 |
| Brother/Sister Incest | 1.80 | 2.05 | 3.68 |
| Only Loli Heroines | 2.00 | 1.78 | 3.55 |
| Reverse Missionary | 2.00 | 1.68 | 3.36 |
| No Character Sprites | 2.00 | 1.63 | 3.26 |
| Only a Single Heroine | 2.67 | 1.02 | 2.71 |
| Anal Penetration | 2.00 | 1.32 | 2.64 |
| Gaping | 1.00 | 2.43 | 2.43 |
| Lolicon | 1.29 | 1.73 | 2.24 |
| Only Virgin Heroines | 2.00 | 1.08 | 2.16 |
| Sitting Sex | 2.00 | 1.05 | 2.11 |
| Pregnant Sex | 1.67 | 1.18 | 1.96 |
| Heroine with a Braid | 1.00 | 1.96 | 1.96 |
| Nukige | 3.00 | 0.65 | 1.95 |
| Sex with Sleepers | 1.00 | 1.90 | 1.90 |
| Loli Heroine | 1.60 | 1.19 | 1.90 |
| Wake-up Sex | 1.00 | 1.81 | 1.81 |
| Vibrators | 1.50 | 1.15 | 1.73 |
| Defloration | 2.00 | 0.76 | 1.52 |
| Masturbation | 1.00 | 1.49 | 1.49 |
| Sex in Water | 1.00 | 1.41 | 1.41 |
| Multiple Penetration | 1.00 | 1.28 | 1.28 |
| Bathroom Sex | 1.00 | 1.19 | 1.19 |
| Blowjob | 1.00 | 1.12 | 1.12 |
| Quickie Fix Position | 1.00 | 1.11 | 1.11 |
| Cowgirl | 1.00 | 0.84 | 0.84 |
| Male Protagonist | 2.75 | 0.30 | 0.83 |
| Sexual Content | 1.00 | 0.63 | 0.63 |
| Rapist Protagonist | 0.33 | 1.75 | 0.58 |
| ADV | 2.00 | 0.14 | 0.29 |
| 0.33 | 0.00 | 0.00 |
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Tickle Torture Engages in (Sexual) | 1 | 3.95 | 2.74 |
| Inbreeding Engages in (Sexual) | 2 | 2.20 | 2.42 |
| Tickle Torture Subject of (Sexual) | 1 | 3.24 | 2.25 |
| Vaginal Multiple Objects Insertion Subject of (Sexual) | 1 | 2.83 | 1.96 |
| Furisode Clothes | 1 | 2.77 | 1.92 |
| Sleep Sex Engages in (Sexual) | 1 | 2.76 | 1.92 |
| Sleep Sex Subject of (Sexual) | 1 | 2.49 | 1.73 |
| Armpit Sex Engages in (Sexual) | 1 | 2.48 | 1.72 |
| Wake-up Sex Subject of (Sexual) | 1 | 2.48 | 1.72 |
| Bestiality Engages in (Sexual) | 1 | 2.46 | 1.70 |
| Incest Engages in (Sexual) | 2 | 1.47 | 1.61 |
| Rope Bondage Harness Clothes | 1 | 2.29 | 1.59 |
| Vaginal + Anal Object Insertion Subject of (Sexual) | 1 | 2.25 | 1.56 |
| Bathroom Sex Engages in (Sexual) | 2 | 1.39 | 1.52 |
| Tiny Braid Hair | 1 | 2.07 | 1.44 |
| Ankle Socks Clothes | 1 | 2.01 | 1.39 |
| Vibrator Subject of (Sexual) | 1 | 1.98 | 1.37 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Vaginal Gaping Engages in (Sexual) | 1 | 1.95 | 1.35 |
| Quickie Fix Engages in (Sexual) | 1 | 1.88 | 1.30 |
| Sexual Blindfold Subject of (Sexual) | 1 | 1.85 | 1.29 |
| Intercrural Sex Engages in (Sexual) | 1 | 1.84 | 1.28 |
| Handjob Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Hidden Eyes | 1 | 1.80 | 1.25 |
| Anal Sex Engages in (Sexual) | 1 | 1.76 | 1.22 |
| Pajamas Clothes | 1 | 1.75 | 1.21 |
| Missionary Engages in (Sexual) | 1 | 1.74 | 1.21 |
| Reverse Missionary Subject of (Sexual) | 1 | 1.74 | 1.20 |
| Cowgirl Engages in (Sexual) | 1 | 1.71 | 1.19 |
| Group Sex of One Female and Several Males Engages in (Sexual) | 1 | 1.70 | 1.18 |
| Rope Bondage Subject of (Sexual) | 1 | 1.67 | 1.16 |
| Garnet Eyes | 1 | 1.66 | 1.15 |
| Small Breasts Body | 1 | 1.66 | 1.15 |
| Double Penetration (Group Sex) Subject of (Sexual) | 1 | 1.65 | 1.14 |
| Mini-dress Clothes | 1 | 1.63 | 1.13 |
| Bondage Sex Subject of (Sexual) | 1 | 1.58 | 1.09 |
| Sex in Water Engages in (Sexual) | 1 | 1.56 | 1.08 |
| Blowjob Subject of (Sexual) | 1 | 1.52 | 1.05 |
| Pissing Engages in (Sexual) | 1 | 1.47 | 1.02 |
| Kid Body | 1 | 1.37 | 0.95 |
| Bukkake Subject of (Sexual) | 1 | 1.35 | 0.93 |
| Pubic Hair Hair | 1 | 1.34 | 0.93 |
| Ribbon Hair Tie Clothes | 1 | 1.19 | 0.83 |
| Anal Sex Subject of (Sexual) | 1 | 1.19 | 0.82 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.81 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Cunnilingus Subject of (Sexual) | 1 | 1.16 | 0.81 |
| Outdoor Sex Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Quickie Fix Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Sitting Sex Subject of (Sexual) | 1 | 1.06 | 0.74 |
| Spiky Bangs Hair | 1 | 1.00 | 0.69 |
| Cowgirl Subject of (Sexual) | 1 | 0.95 | 0.66 |
| Straight Hair | 1 | 0.94 | 0.65 |
| Doggy Style Subject of (Sexual) | 1 | 0.92 | 0.64 |
| Shoulder-length Hair | 1 | 0.92 | 0.64 |
| Black Hair | 1 | 0.80 | 0.56 |
| Blowjob Engages in (Sexual) | 1 | 0.76 | 0.53 |
| Brown Hair | 1 | 0.68 | 0.47 |
| Short Hair | 1 | 0.61 | 0.42 |
| Slim Body | 1 | 0.58 | 0.40 |
| Pale Body | 1 | 0.37 | 0.26 |