Average Rating:7.19
Bayesian Rating:7.02
Total Votes:31
Updated 1 month ago
One day, Shimizu Seiya wakes up in a hospital bed, from his little sisters he learns that he was carried there by an ambulance. As he has no memory of what happened, he asks his little sisters about it, and they answer... "Onii-chan, you had a technobreak..." A technobreak, in other words his heart malfunctioned because of a too long masturbation period, he lost consciousness and was found by his little sisters which saved his life. But the day before he was supposed to be just doing university assignments and he had no memory or intention to masturbate...! Apparently the reason for this was the high amount of energy drinks he drank in order to work overnight. The drink was studied in a laboratory and found to have included substances forbidden by law, and currently was being recovered by police. The drink caused Seiya to become extremely aroused and was unable to to stop masturbating, he continued that overnight until losing consciousness. Apparently the symptoms would eventually disappear and his body will go back to normal. Meanwhile Seiya felt relieved, his little sister gave him a certain item. "It's a chastity belt, Onii-chan." While embarrassed, his little sister continued. "At this rate you won't be able to stop to stop masturbating, so..." "We have decided that we will manage your ejaculation!" These words astounded Seiya and so, his days of having his ejaculation controlled by his cute little sisters began.
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!! 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 | Characters | Importance | Weight |
|---|---|---|---|
| Group (4+) Blowjob Engages in (Sexual) | 4 | 2.67 | 4.31 |
| Sex in Front of an Audience Engages in (Sexual) | 5 | 1.50 | 2.69 |
| Sex with Protagonist Only Engages in (Sexual) | 4 | 1.67 | 2.68 |
| Vaginal Masturbation Engages in (Sexual) | 4 | 1.65 | 2.65 |
| French Kiss Engages in (Sexual) | 5 | 1.46 | 2.62 |
| Duct Tape Bondage Engages in (Sexual) | 1 | 3.73 | 2.59 |
| Group (4+) Blowjob Subject of (Sexual) | 1 | 3.65 | 2.53 |
| Sex in Water Engages in (Sexual) | 4 | 1.57 | 2.52 |
| Nipple Teasing Subject of (Sexual) | 4 | 1.56 | 2.51 |
| Pissing on Others Engages in (Sexual) | 2 | 2.27 | 2.50 |
| Bathroom Sex Engages in (Sexual) | 5 | 1.38 | 2.48 |
| Pissing Subject of (Sexual) | 2 | 2.18 | 2.40 |
| Non-blood-related Sister Role | 2 | 2.17 | 2.38 |
| Non-blood-related Incest Engages in (Sexual) | 2 | 2.15 | 2.37 |
| Sex on Beach Engages in (Sexual) | 2 | 2.15 | 2.36 |
| Spoons Subject of (Sexual) | 3 | 1.67 | 2.31 |
| Gokkun Engages in (Sexual) | 2 | 2.05 | 2.25 |
| Sex on Toilet Engages in (Sexual) | 2 | 2.03 | 2.23 |
| Emotional Personality | 2 | 2.01 | 2.21 |
| Female Ejaculation Engages in (Sexual) | 4 | 1.36 | 2.19 |
| Bukkake Subject of (Sexual) | 4 | 1.35 | 2.18 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 5 | 1.17 | 2.09 |
| Sensual Biting Engages in (Sexual) | 1 | 3.01 | 2.09 |
| Chastity Belt Clothes | 1 | 2.95 | 2.04 |
| Sex in Public Places Engages in (Sexual) | 4 | 1.26 | 2.03 |
| Sensual Biting Subject of (Sexual) | 1 | 2.92 | 2.02 |
| Pink Rotor Subject of (Sexual) | 2 | 1.84 | 2.02 |
| Duct Tape Bondage Subject of (Sexual) | 1 | 2.91 | 2.02 |
| Intercrural Sex Engages in (Sexual) | 2 | 1.83 | 2.02 |
| Deepthroat Engages in (Sexual) | 2 | 1.79 | 1.97 |
| Cooking Engages in | 3 | 1.42 | 1.97 |
| Twin Boobjob Engages in (Sexual) | 2 | 1.78 | 1.95 |
| Teal Eyes | 2 | 1.72 | 1.89 |
| Tominagi Subject of (Sexual) | 3 | 1.36 | 1.88 |
| Off-The-Shoulder Sweater Clothes | 1 | 2.70 | 1.87 |
| Twin Boobjob Subject of (Sexual) | 1 | 2.68 | 1.86 |
| Gyaru Clothes | 1 | 2.68 | 1.86 |
| Imouto Act Role | 1 | 2.59 | 1.79 |
| Reverse Cowgirl Subject of (Sexual) | 2 | 1.63 | 1.79 |
| Piledriver Engages in (Sexual) | 1 | 2.55 | 1.77 |
| Sixty-nine Engages in (Sexual) | 3 | 1.26 | 1.75 |
| Quickie Fix Subject of (Sexual) | 4 | 1.08 | 1.75 |
| Boobjob Engages in (Sexual) | 4 | 1.07 | 1.73 |
| Wake-up Sex Subject of (Sexual) | 1 | 2.48 | 1.72 |
| Miniskirt Clothes | 4 | 1.06 | 1.71 |
| Sex at School Engages in (Sexual) | 2 | 1.55 | 1.70 |
| Friendly Personality | 3 | 1.21 | 1.68 |
| Modern Tsundere Personality | 1 | 2.42 | 1.68 |
| Half Updo Hair | 1 | 2.42 | 1.68 |
| Non-blood-related Brother Role | 1 | 2.38 | 1.65 |
| Piss Drinking Subject of (Sexual) | 1 | 2.36 | 1.64 |
| Standing Sex Subject of (Sexual) | 3 | 1.18 | 1.63 |
| Wake-up Sex Engages in (Sexual) | 1 | 2.35 | 1.63 |
| Facesitting Subject of (Sexual) | 1 | 2.34 | 1.62 |
| Pissing Engages in (Sexual) | 2 | 1.47 | 1.62 |
| Incest Engages in (Sexual) | 2 | 1.47 | 1.62 |
| Outdoor Sex Engages in (Sexual) | 3 | 1.16 | 1.61 |
| Shirt Clothes | 3 | 1.16 | 1.60 |
| Younger Sister Role | 2 | 1.45 | 1.59 |
| Bondage Sex Engages in (Sexual) | 1 | 2.29 | 1.58 |
| Vaginal + Anal Penetration Subject of (Sexual) | 1 | 2.28 | 1.58 |
| Intercrural Sex Subject of (Sexual) | 1 | 2.28 | 1.58 |
| Nightgown Clothes | 1 | 2.27 | 1.57 |
| Whimsical Personality | 1 | 2.25 | 1.56 |
| Sexual Cosplay Engages in (Sexual) | 1 | 2.25 | 1.56 |
| V Bangs Hair | 2 | 1.41 | 1.55 |
| Body Ribbon Clothes | 1 | 2.23 | 1.55 |
| Reverse Cowgirl Engages in (Sexual) | 1 | 2.22 | 1.54 |
| Big Breasts Body | 3 | 1.11 | 1.54 |
| Cowgirl Subject of (Sexual) | 4 | 0.96 | 1.54 |
| Observant Personality | 1 | 2.22 | 1.54 |
| Spoons Engages in (Sexual) | 1 | 2.21 | 1.53 |
| Seventh Posture Engages in (Sexual) | 1 | 2.19 | 1.52 |
| Seduction Engages in | 1 | 2.18 | 1.51 |
| Footjob Subject of (Sexual) | 1 | 2.18 | 1.51 |
| Anal Object Insertion Subject of (Sexual) | 1 | 2.17 | 1.50 |
| Sexual Submissive Role | 1 | 2.17 | 1.50 |
| Torn Clothing Clothes | 1 | 2.16 | 1.50 |
| Doggy Style Subject of (Sexual) | 4 | 0.93 | 1.49 |
| Fainting Subject of | 1 | 2.13 | 1.48 |
| Hidden Vibrator Subject of (Sexual) | 1 | 2.13 | 1.47 |
| Voyeurism Engages in (Sexual) | 1 | 2.12 | 1.47 |
| Ahoge Hair | 2 | 1.33 | 1.46 |
| Tominagi Engages in (Sexual) | 1 | 2.10 | 1.46 |
| Hospitalization Subject of | 1 | 2.10 | 1.45 |
| Consensual Porn Acting Engages in (Sexual) | 1 | 2.09 | 1.45 |
| Brother Complex Personality | 1 | 2.06 | 1.43 |
| Waitstaff Uniform Clothes | 1 | 2.06 | 1.43 |
| Being Drugged Subject of | 1 | 2.06 | 1.43 |
| Anal Fingering Engages in (Sexual) | 1 | 2.05 | 1.42 |
| Kind Personality | 3 | 1.02 | 1.42 |
| Reading Engages in | 1 | 2.03 | 1.41 |
| Nurse Uniform Clothes | 1 | 2.01 | 1.39 |
| Nipple Teasing Engages in (Sexual) | 1 | 2.00 | 1.39 |
| High School Student Role | 4 | 0.86 | 1.39 |
| Virgin Sex Engages in (Sexual) | 4 | 0.85 | 1.38 |
| Vaginal Object Insertion Subject of (Sexual) | 1 | 1.98 | 1.38 |
| Decorative Belt Clothes | 1 | 1.98 | 1.37 |
| Facesitting Engages in (Sexual) | 1 | 1.97 | 1.36 |
| Sidehair Hair | 3 | 0.98 | 1.36 |
| Vibrator Subject of (Sexual) | 1 | 1.96 | 1.36 |
| Classmate Role | 2 | 1.23 | 1.35 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Piledriver Subject of (Sexual) | 1 | 1.94 | 1.35 |
| Voyeurism Subject of (Sexual) | 1 | 1.94 | 1.34 |
| Assertive Personality | 1 | 1.93 | 1.34 |
| Schoolmate Role | 1 | 1.91 | 1.32 |
| Masturbation in front of an Audience Engages in (Sexual) | 1 | 1.91 | 1.32 |
| Part-time Worker Role | 1 | 1.90 | 1.32 |
| Low Self-esteem Personality | 1 | 1.89 | 1.31 |
| Quickie Fix Engages in (Sexual) | 1 | 1.88 | 1.30 |
| Jealous Personality | 1 | 1.88 | 1.30 |
| Standing Sex Engages in (Sexual) | 1 | 1.87 | 1.29 |
| Sexual Blindfold Subject of (Sexual) | 1 | 1.86 | 1.29 |
| Boobjob Subject of (Sexual) | 1 | 1.86 | 1.29 |
| Cunnilingus Subject of (Sexual) | 2 | 1.16 | 1.28 |
| Handjob Engages in (Sexual) | 2 | 1.15 | 1.27 |
| Sitting Sex Engages in (Sexual) | 1 | 1.82 | 1.26 |
| Missionary Subject of (Sexual) | 2 | 1.12 | 1.23 |
| Blowjob Engages in (Sexual) | 4 | 0.76 | 1.23 |
| Anal Sex Engages in (Sexual) | 1 | 1.76 | 1.22 |
| Side Tail Hair | 1 | 1.75 | 1.21 |
| Handjob Subject of (Sexual) | 1 | 1.75 | 1.21 |
| Missionary Engages in (Sexual) | 1 | 1.74 | 1.21 |
| Older Brother Role | 1 | 1.73 | 1.20 |
| Footjob Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Anal Fingering Subject of (Sexual) | 1 | 1.71 | 1.19 |
| Vaginal Fingering Subject of (Sexual) | 2 | 1.08 | 1.19 |
| Reserved Personality | 1 | 1.71 | 1.19 |
| Huge Breasts Body | 1 | 1.69 | 1.17 |
| Carefree Personality | 1 | 1.69 | 1.17 |
| Doggy Style Engages in (Sexual) | 1 | 1.68 | 1.17 |
| Confident Personality | 1 | 1.68 | 1.17 |
| Ribbon Hair Accessory Clothes | 1 | 1.66 | 1.15 |
| Pink Eyes | 1 | 1.63 | 1.13 |
| Shy Personality | 1 | 1.62 | 1.12 |
| Vaginal Fingering Engages in (Sexual) | 1 | 1.61 | 1.12 |
| Bondage Sex Subject of (Sexual) | 1 | 1.59 | 1.10 |
| University Student Role | 1 | 1.58 | 1.10 |
| Ore Personality | 1 | 1.58 | 1.09 |
| Older Sister Role | 1 | 1.56 | 1.08 |
| Full Sister Role | 1 | 1.56 | 1.08 |
| Cunnilingus Engages in (Sexual) | 1 | 1.55 | 1.07 |
| Blowjob Subject of (Sexual) | 1 | 1.52 | 1.05 |
| Orange Hair | 1 | 1.51 | 1.05 |
| Necklace Clothes | 1 | 1.50 | 1.04 |
| Slim Body | 5 | 0.58 | 1.03 |
| Serious Personality | 1 | 1.49 | 1.03 |
| Straight Hair | 2 | 0.94 | 1.03 |
| Sailor School Uniform Clothes | 1 | 1.48 | 1.02 |
| Seventh Posture Subject of (Sexual) | 1 | 1.47 | 1.02 |
| Bikini Clothes | 1 | 1.45 | 1.01 |
| Teasing Engages in | 1 | 1.43 | 0.99 |
| Tank Top Clothes | 1 | 1.40 | 0.97 |
| Knee-high Socks Clothes | 1 | 1.39 | 0.96 |
| Tsurime Eyes | 1 | 1.38 | 0.96 |
| Wavy Hair | 1 | 1.35 | 0.94 |
| Pink Hair | 1 | 1.34 | 0.93 |
| Curtained Hair | 1 | 1.30 | 0.90 |
| Waist Length+ Hair | 2 | 0.82 | 0.90 |
| Ribbon Tie Clothes | 1 | 1.26 | 0.87 |
| Teen Body | 3 | 0.62 | 0.86 |
| School Uniform Clothes | 2 | 0.76 | 0.84 |
| Blue Hair | 1 | 1.20 | 0.83 |
| Anal Sex Subject of (Sexual) | 1 | 1.19 | 0.83 |
| Long Hair | 2 | 0.75 | 0.82 |
| Twin Tails Hair | 1 | 1.14 | 0.79 |
| Tareme Eyes | 1 | 1.11 | 0.77 |
| Ponytail Hair | 1 | 1.10 | 0.76 |
| Sitting Sex Subject of (Sexual) | 1 | 1.07 | 0.74 |
| Parted to Side Hair | 1 | 1.04 | 0.72 |
| Amber Eyes | 1 | 1.03 | 0.72 |
| Short Hair | 2 | 0.61 | 0.67 |
| Pale Body | 5 | 0.37 | 0.66 |
| Shoulder-length Hair | 1 | 0.92 | 0.64 |
| Blond Hair | 1 | 0.89 | 0.62 |
| Black Hair | 1 | 0.80 | 0.56 |
| Young-adult Body | 1 | 0.76 | 0.52 |
| Brown Hair | 1 | 0.69 | 0.48 |