Gokuin no Sentou

獄淫の尖塔

Gokuin no Sentou
TitleGokuin no Sentou
Original title獄淫の尖塔
LengthMedium (10 - 30 hours)
DeveloperBlack Cyc
Publishers Black Cyc
LinksVNStat

Description

Taking an ordinary tour of his sister’s workplace, Mitsuya Harunobu had expected the day to be friendly and amusing – not a desperate struggle for survival. The voice that echoed through his head was cold and malicious, "Only one with the strongest desire shall earn freedom." In the passing of a single moment, the gleaming corporate tower was reborn into a sadistic infernal prison: an unknown malevolent force had seized control of the building and corrupted nearly every person within. Rape. Torture. Murder. These were now normality. Somehow unaffected by the supernatural entity, Harunobu resolved his sister would escape the incomprehensible nightmare unharmed - even if Harunobu would have to sacrifice himself in the process.

[From Eroge Review]

Protagonist

Mitsuya Harunobu
Mitsuya Harunobu三津谷 晴信 
MeasurementsHeight: 177cm
Hair, Black, Eye Covering, Short
Eyes, Amber
Body, Average Height, Muscular, Pale, Teen
Clothes, Jeans, T-shirt
Items, Handgun
Personality, Proactive, Reserved
Role, Classmate, Full Brother, High School Student, Orphan, Younger Brother
Engages in, Cooking, Murder, Rape, Revenge
Subject of, Avoidable Death, Reverse Rape
Engages in (Sexual), Group Sex, Incest, Sex with Tentacles (Consensual)

Description

Parents lost to a fatal traffic accident, Harunobu tries to relieve his sister’s burden. Still enrolled in high school and therefore ineligible for fulltime employment, he faithfully takes the role of a housekeeper who eases the breadwinner’s daily return from work. Though Harunobu has little interest and time for athletic activities, he possesses a natural aptitude for physical challenges.

[From Nargrakhan's review.]

Main characters

Horikura Yukino
Horikura Yukino堀倉 幸乃 
MeasurementsHeight: 161cm, Bust-Waist-Hips: 92-60-88cm
Hair, Black, Curtained, Long, No Bangs, Parted to Side, Straight
Eyes, Green, Hosome
Body, Average Height, E+ Cup, Makeup, Pale, Slim, Young-adult
Clothes, Bracelet, Dress, Dress Shoes, Earrings, Pendant Necklace, Ring, Robe, Shawl, Wristband
Personality, Arrogant, Possessive
Role, Wealthy, Wife
Engages in, Murder, Rape
Subject of, Assault, Avoidable Death, Other Route Death
Engages in (Sexual), Ahegao, Anal Fingering, Blowjob, Blowjob Duck Face, Boobjob, Facesitting, Handjob
Subject of (Sexual), Anal Sex, Cowgirl, Cunnilingus, Doggy Style, Sitting Sex, Vibrator
Voiced byMisumi Sui

Description

Yukino occupies the multimillion penthouse mansion atop the skyscraper. Though married to an incredibly wealthy technologist, she has grown disenfranchised with his repeated infidelity and rejection of her sexual advances. Spoiled by monetary riches, Yukino is the iconic example of an arrogant, domineering, and egotistical woman. Spends most of her free time purchasing designer merchandise.

[From Nargrakhan's review.]

Koshino Kozue
Koshino Kozue小篠 梢恵 
MeasurementsHeight: 160cm, Bust-Waist-Hips: 82-57-81cm
Hair, Black, Curtained, Short
Eyes, Brown
Body, Average Height, Pale, Young-adult
Clothes, Dress Shoes, Knee-high Socks, Shirt, Shorts, Tank Top, Thigh-high Stockings
Personality, Idiot
Engages in, Cooking
Subject of, Assault, Gang Rape, Rape, Tentacle Rape
Engages in (Sexual), Ahegao, Blowjob, Boobjob, Group Sex, Masturbation
Subject of (Sexual), Bukkake, Cowgirl, Reverse Missionary, Sitting Sex, Standing Sex
Voiced bySuzune Kagetsu

Description

Working part-time as an amusement attendant, Kozue trudged through high school with poor academic performance. Unable to pass college entrance exams, her life has generally spiraled into an idle dead stop. Kozue often dreams about finding a sugar daddy to take care of her, and is quite the genius at gourmet cooking thanks to her mother’s culinary experience.

[From Nargrakhan's review.]

Koumoto Machi
Koumoto Machi興本 真知 
MeasurementsHeight: 162cm, Bust-Waist-Hips: 77-56-80cm
Hair, Black, Shoulder-length
Eyes, Black
Body, Average Height, Pale, Young-adult
Clothes, Dress Shoes, Pinafore Dress, Shirt
Personality, Low Self-esteem, Timid
Role, Unemployed
Subject of, Assault, Gang Rape, Rape, Torture
Engages in (Sexual), Ahegao, Blowjob
Subject of (Sexual), Anal Sex, Bondage Sex, Butterfly, Clamps (BDSM), Double Penetration (Group Sex), Erotic Spanking, Fisting, Quickie Fix, Rope Bondage, Sitting Sex, Spreader Bar
Voiced bySuzuya Maya

Description

Currently six months unemployed, Machi once worked for a prestigious corporation. As if hated by fortune, Machi’s misery was further compounded by the sudden departure of her boyfriend and the gradual reduction of unemployment compensation. The emotional shock of these events has all but devastated the woman’s frail mindset and self esteem.

[From Nargrakhan's review.]

Mineoka Mutsuki
Mineoka Mutsuki峰岡 夢月 
MeasurementsHeight: 155cm, Bust-Waist-Hips: 73-56-74cm
Hair, Grey, Shoulder-length, Twin Tails
Eyes, Grey
Clothes, Cloak, Dress, Ribbon Hair Tie
Subject of, Tentacle Rape
Engages in (Sexual), Blowjob, Masturbation, Virgin Sex
Subject of (Sexual), Boobjob, Doggy Style, Missionary, Quickie Fix, Sitting Sex
Voiced bySumishiro Kiyoka

Description

Mitsuki is good friends with Kozue, as both work frequently at the same amusement firm. Though few people in the modern world actually believe in fortunetelling mysticism, Mitsuki’s impeccable judge of character and insightful intuition results in surprisingly accurate prophecies. Has quite the mischievous streak for such an openly demure person.

[From Nargrakhan's review.]

Mitsuya Kanami
Mitsuya Kanami三津谷 香奈美 
MeasurementsHeight: 162cm, Bust-Waist-Hips: 85-58-85cm
Hair, Brown, Long, Parted in Middle, Straight
Eyes, Amber
Body, Average Height, Pale, Young-adult
Clothes, Apron, Dress, Dress Shoes, Half-naked, Pantyhose, Shirt, Skirt, Skirt Suit
Personality, Hardworker, Kind, Outgoing, Protective, Smart
Role, Full Sister, Head of Household, Older Sister, Orphan
Engages in, Cleaning, Cooking
Subject of, Assault, Gang Rape, Other Route Death, Tentacle Rape
Engages in (Sexual), Ahegao, Blowjob, Boobjob, Group Sex, Incest, Sixty-nine, Virgin Sex
Subject of (Sexual), Butterfly, Cowgirl, Doggy Style, Double Penetration (Group Sex), Seventh Posture, Vaginal Fingering
Voiced byKotenjou Kazuno

Description

Harunobu’s older sister. Highly intelligent, sociable and attractive, Kanami has found little time for a serious relationship. She is committed to employment, often working long unrewarding hours into the night, to ensure her brother has a roof to sleep under and food to eat. Kanami can be overprotective of Harunobu at times, but thoroughly places his wellbeing before her own.

[From Nargrakhan's review.]

Takayama Ayame
Takayama Ayame高輪 あやめ 
MeasurementsHeight: 165cm, Bust-Waist-Hips: 84-57-81cm
Hair, Curtained, Red, Shoulder-length
Eyes, Amber
Body, Average Height, Pale, Tattoo, Teen
Clothes, Boots, Choker, Jacket, Shirt, Shorts, Wristband
Role, Classmate
Subject of, Assault, Clinical Depression, Gang Rape, Rape, Tentacle Rape, Torture
Engages in (Sexual), Ahegao, Blowjob, Boobjob, Sixty-nine
Subject of (Sexual), Bukkake, Doggy Style, Missionary, Seventh Posture, Sitting Sex
Voiced byShibuya Hime

Description

Ayame is an old classmate of Harunobu. Unable to cope with the trauma of her parent’s divorce and remarriages, Ayame dropped out of school to find refuge with a violent street gang. She had always been envious of the familial harmony Harunobu enjoyed, and became sadden by the tragedy they suffered.

[From Nargrakhan's review.]

Side characters

Inose Takahisa
Inose Takahisa伊乃畝 高久 
MeasurementsHeight: 184cm
Hair, Blue
Eyes, Black
Body, Pale, Tall
Clothes, Belt, Boots, Coat, Earrings, Gloves, Scarf, Shirt, Trousers
Personality, Secretive, Timid
Role, Villain, Yakuza
Voiced byHarada Tomotaka

Description

Junta’s scheming second in command. Takahisa dreams of overthrowing his superior and taking direct control of the gang, but lacks the bravery and charisma to successfully achieve it. He secretly lusts after Ayame, but cannot act upon these feels so long as Junta favors her. Frustrated by these denials, Takahisa merely sulks in the shadows waiting for his opportunity.

[From Nargrakhan's review.]

Iwahara Junta
Iwahara Junta岩原 惇太 
MeasurementsHeight: 180cm
Hair, Blond, Short
Body, Muscular, Olive, Scar, Tall
Clothes, Bracelet, Jacket, Ring, Sports Shoes, Trousers, T-shirt
Personality, Rude, Selfish
Role, Gang Leader, Villain
Engages in, Fighting
Voiced byUeki Tooru

Description

Leader of the street gang Ayame joined. A violently savage man with little respect for women and even less regard for anyone opposing his wishes. Junta maintains several Yakuza contacts, trafficking narcotics and illegal merchandise for the criminal syndicate. Though lacking redeemable humane traits, he is proficient at immoral profiteering and gang warfare.

[From Nargrakhan's review.]