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Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!

お兄ちゃん!! 射精の管理は妹に任せて!!

お兄ちゃん!! 射精の管理は妹に任せて!!
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
Play timeMedium (11h15m from 1 votes)
DeveloperAtelier Kaguya TEAM Gassa-Q
PublishersAtelier Kaguya
Shops» JP¥ 7124 @ DLsite


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.

Brother/Sister Romance 3.0 Full Chastity Belt 3.0 Heroine with Big Breasts 3.0 High School Student Heroine 3.0 Only Younger Heroines 3.0 Protagonist's Full Sister as a Heroine 3.0 Protagonist's Younger Sister as a Heroine 3.0 Under the Same Roof 3.0 Blood-related Brother/Sister Incest 2.5 Male Protagonist 2.5 Protagonist's Non-blood-related Sister as a Heroine 2.5 ADV 2.0 Anal Toys 2.0 Bathroom Sex 2.0 Bondage 2.0 Branching Plot 2.0 Brocon Heroine 2.0 Brother/Sister Incest 2.0 Bukkake 2.0 Clothed Female Naked Male 2.0 Cowgirl 2.0 Cunnilingus 2.0 Deepthroat 2.0 Defloration 2.0 Discreet Sex 2.0 Doggy Style 2.0 Domicile 2.0 Ejaculation Choice 2.0 Excessive Semen 2.0 Facesitting 2.0 Female Ejaculation 2.0 Group Sex of One Male and Several Females 2.0 Gyaru Heroine 2.0 Harem EndingS 2.0 Heroine with Huge Breasts 2.0 Intercrural Sex 2.0 Love Hotel 2.0 Missionary Position 2.0 Modern Tsundere Heroine 2.0 Multiple Endings 2.0 Multiple Penetration 2.0 Mutual Masturbation 2.0 Naked Sprites 2.0 Non-blood-related Brother/Sister Incest 2.0 No Opening Movie 2.0 Nukige 2.0 Only Virgin Heroines 2.0 Other Perspectives 2.0 Outdoor Sex 2.0 Piledriver 2.0 Pissing 2.0 Production of Pornography (Amateur) 2.0 Quadruple+ Blowjob 2.0 Quickie Fix Position 2.0 Reverse Cowgirl 2.0 Reverse Missionary 2.0 Sex in Public Places 2.0 Sex in Water 2.0 Sex on a Beach 2.0 Sex on Toilet 2.0 Sexual Blindfold 2.0 Sex with Protagonist Only 2.0 Sitting Sex 2.0 Sixty-nine 2.0 Sounds of Copulation 2.0 Spoons 2.0 Standing Sex 2.0 Twin Boobjob 2.0 University Student Protagonist 2.0 Vaginal Fingering 2.0 Vibrators 2.0 Wake-up Sex 2.0 Anal Sex 1.0 Background Moans 1.0 Forbidden Love 1.0 Pissing on Others 1.0 Secret Romance 1.0 Single Blowjob 1.0 Single Boobjob 1.0 Single Footjob 1.0 Single Handjob 1.0 Vaginal Masturbation 1.0


Japanese (3)
2015-12-0418+Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!! - Trial Edition
2015-12-1818+Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!! - Download Edition
2015-12-1818+Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!! - Package Edition


Full character list

Character summary

Shimizu SeiyaProtagonist
Kanzaki MihiroMain character
Voiced by Tezuka Ryouko
Manaka MamoriMain character
Voiced by Shibuya Hime
Shimizu AinaMain character
Voiced by Himekawa Airi
Shimizu KyoukaMain character
Voiced by Imaya Minami

User stats

Vote stats
49 votes total, average 7.16 (good)
Recent votes(show all)


Popularity: ranked #2712 with a score of 0.80

Bayesian rating: ranked #2639 with a rating of 6.64


Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!! - Trial Edition

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