Zaishuu -The SiN-

罪囚-The SiN-

TitleZaishuu -The SiN-
Original title罪囚-The SiN-
LengthMedium (10 - 30 hours)
Publishers Tactics
Shops» US$ 29.95 @ MangaGamer


Following the death of their parents, Akira made it a solemn duty to ensure his sister could live a normal existence, doing everything within his power to bring happiness into their inconstant lives. As Akira’s bond to Aya inevitably grew closer, others began to jealously whisper how the siblings were forging a relationship that went beyond the accepted conventions of brother and sister; allegations neither showed particular concern towards. Yet this idyllic innocence was not meant to last, and the devotion between Aya and Akira would be sorely tested by an incomprehensible world they never knew existed – a reality that threatens to smother both in malicious darkness.

[From Eroge Review]

Main characters

Kamijou Aya
Kamijou Aya上條 彩 
Hair, Green, Waist Length+
Eyes, Red
Body, Wings
Clothes, Miniskirt, Thigh-high Stockings
Personality, Brocon
Role, Non-blood-related Sister, Waitstaff
Subject of, Kidnapping, Rape, Tentacle Rape
Engages in (Sexual), Doggy Style, Masturbation
Voiced byNoda Asumi


Aya is Akira's little sister with a serious brother complex, who is usually staying as close to him as possible, to the point that others suspect that they have a relationship more close than a brother and a sister.

Kusakabe Yukari
Kusakabe Yukari草壁 紫 
Hair, Blond, Waist Length+
Body, Mole
Clothes, Chinese Dress, Coat, Garter Belt Stockings
Role, Superhuman, Teacher
Engages in, Smoking
Voiced byEnokizu Mao


Yukari-sensei is a new art and homeroom teacher for Akira's class.

Okitsu Nagi
Okitsu Nagi沖津 凪 
Hair, Black
Eyes, Brown
Clothes, Beret
Items, Dual-Wield Weapon, Sword
Role, Healer, Hunter
Engages in, Swordsmanship
Voiced byMisaki Tomomi


Nagi Okitsu is a demon hunter that arrived in Japan due to their increased presence in the region. She is a cold and cynical loner, preferring as little interactions with other people as possible.<hidden by spoiler settings>She is Keith former student

Shindou Mayuki
Shindou Mayuki進藤 真由紀 
Hair, Braid, Brown, Waist Length+
Clothes, Cross Necklace, Glasses
Personality, Jealous
Role, Daughter, Superhuman, Wealthy
Engages in, Drawing
Subject of, Coercion, Possession, Tentacle Rape
Voiced byHaruse Miki


Shindou Mayuki is one grade higher than Akira and president of the Art Club. Her current worry is the fact that Akira and the others don’t take the club seriously. At least that’s her outward worry. Her real worry is her own love life: it’s growing harder for her to hide her feelings towards Akira.

Side characters

Hair, Grey, Kemonomimi, No Bangs, Shoulder-length
Eyes, Blue, Heterochromia, Violet
Body, AA Cup, Furry Tail, Kid, Pale, Slim
Clothes, Boots, Mini-dress, Necktie, Spats, Thigh-high Stockings, Ushanka
Role, Dog, Non-human, Pet
Engages in, Betrayal
Subject of, Tentacle Rape
Voiced byAyukawa Hinata


Cassaca is a strange girl with a real tail who seems to live near the Kamijou house. Her left and right eyes are different colors and she easily picks up the phrases she reads in manga or hears on TV. As a result, her speech is a mess and she may speak in a dialect one day, like an Edo-period prostitute the next, or like a guy some other day.

Omi Atsumi
Omi Atsumi臣 温美 
Hair, Red
Eyes, Brown
Items, Video Camera
Role, Waitstaff
Engages in, Mind Control
Voiced byHokuto Minami


Omi Atsumi is one of Aya’s classmates and one of the few people who aren’t afraid to approach either Aya or Akira with a smile despite his tendency to push others away. Her ability to take action has made her the hope of the Newspaper Club. However, her motivation often goes overboard and many students tremble with fear to see a camera in her hands.