Izuna Zanshinken


Izuna Zanshinken
TitleIzuna Zanshinken
Original titleイヅナ斬審剣
LengthMedium (10 - 30 hours)
DeveloperAkatsuki Works Black
Publishers Akatsuki Works Black


Koutarou arrives in Yuunagi City, in order to enter the service of the Kuzuryuu yakuza family. A slender young man with an apparently innocent manner, he reveals the other side of his nature during a rather abrupt test from his new 'owner', his cold eyes promising death. He is there to replace his father as Izuna for Yuunagi City, claiming the lives of true villains at the orders of his new master.


Musumi Koutarou
Musumi Koutarou六角 弘太郎 
Hair, Brown, Parted to Side, Short, Straight
Eyes, Amber
Body, Slim, Teen
Clothes, Bracer, Mask, Ninja Suit, School Uniform
Items, Katana, Throwing Knife
Personality, Boku, Brave, Cold-hearted, Confident, Donkan, Friendly, Honorable, Kind, Loyal, Proactive, Secretive, Vindictive
Role, Ninja, Secret Identity, Transfer Student
Engages in, Fighting, Investigation, Murder


Main protagonist.

Born in rural area, comes to Yuunagi City to serve Kuzuryuu as new Izuna. Officialy he is sold to yakuza because of his father's debt. His classmates call him Rokkaku.

Bright and cheerful, but dense when it comes to relationships. As Izuna, he is brutal and cold-blooded, yet pure and believing in justice.

Main characters

Agano Hikaru
Agano Hikaru阿賀野 ヒカル 
Hair, Ahoge, Orange, Parted to Side, Short, Straight, V Bangs
Eyes, Amber
Body, AA Cup, Slim, Teen
Clothes, Old Type School Swimsuit, Sailor Suit, School Uniform, Tank Top, Trousers, T-shirt
Personality, Boku, Curious, Energetic, Friendly, Smart, Tomboy
Role, Classmate, Friend, High School Student
Engages in, Investigation, Swimming
Subject of, Assault, Kidnapping
Engages in (Sexual), Blowjob, Humping, Masturbation, Virgin Sex
Subject of (Sexual), Quickie Fix, Tominagi
Voiced byOgura Yui


Kotaro's classmate.

Bright and cheerful, she becomes Kotaro's best friend. She approaches Suzuka without fear and tries to be on friendly terms with her. Her father is a policeman and she believes that killing criminals is wrong.

Himekawa Shinobu
Himekawa Shinobu姫川 志乃蕪 
Hair, Blue, Intake, Ponytail, V Bangs, Waist Length+
Eyes, Violet
Body, Teen
Clothes, Dress, Hair Ribbon, Leotard, Ninja Suit, Sailor Suit, School Uniform
Items, Handgun, Katana, Wire Weapon
Personality, Kind, Loyal, Mature, Refined, Secretive, Vindictive
Role, High School Student, Ninja, Senpai, Teammate
Engages in, Fighting, Investigation, Revenge
Engages in (Sexual), Blowjob, Handjob, Lesbian Sex, Outdoor Sex, Sixty-nine, Vaginal Fingering, Virgin Sex
Subject of (Sexual), Cowgirl, Cunnilingus, Quickie Fix
Voiced byArisugawa Miyabi


Suzuka's attendant and closest friend.

After her parents died as victims of burglary, she was brought to Kuzuryuu household by Kotaro's father. Since then she became Suzuka's closest aide and almost a sister. Refined and composed, she helps Kotaro in his work hoping that one day she will be able to avenge her parents.

Kuzuryuu Suzuka
Kuzuryuu Suzuka九頭竜 鈴華 
MeasurementsHeight: 157cm
Hair, Blunt Bangs, Hime Cut, Violet, Waist Length+
Eyes, Blue
Body, E+ Cup, Teen
Clothes, Choker, Detached Sleeves, Kimono, Sailor Suit, School Uniform
Personality, Honorable, Kind, Proactive, Refined, Secretive, Serious, Smart
Role, Head of Household, High School Student, Master
Subject of, Confinement, Rape
Engages in (Sexual), Boobjob, Lesbian Sex, Virgin Sex
Subject of (Sexual), Bondage Sex, Cunnilingus, Doggy Style, Spoons, Vaginal Fingering
Voiced bySerizono Miya


8th head of Kuzuryuu group and Kotaro's master.

After her parents' tragic death she became new leader of Kuzuryuu group. Due to this fact she is feared by her fellow schoolmates, but she also treats them distantly because of her position. Raised in household full of chivalry, she is serious, kind and honorable.

Side characters

Hayatsuki Masaki
Hayatsuki Masaki早月 政樹 
Hair, Curtained, Grey, Parted in Middle, Short
Eyes, Black
Body, Adult
Clothes, Eyepatch, Gloves, Necktie, Suit
Items, Handgun
Personality, Kind, Loyal, Refined, Smart
Role, Coworker
Engages in (Sexual), Sitting Sex
Voiced byKontsu


Lieutenant of Kuzuryuu group.

Originally working as a programmer, after some dramatic events he joined Kuzuryuu group. Calm and polite, he quickly achieved the position of lieutenant. He provides Kotaro with intel and logistic support during missions.

Jouganji Tomoe
Jouganji Tomoe常願寺 巴 
Hair, Ahoge, Claret, Spiky Bangs, Straight, Waist Length+
Eyes, Amber
Body, Young-adult
Clothes, Blouse, Coat, Miniskirt, Thigh-high Stockings
Personality, Energetic, Insightful, Tomboy
Role, Delinquent, Teacher
Engages in (Sexual), Virgin Sex
Subject of (Sexual), Sitting Sex
Voiced byOda Mari


Teacher in Kotaro's class.

Ex-leader of biker gang. She wants to ensure that her students won't repeat her mistakes and become respectable adults.

Neon Dragulescu Buzau
Neon Dragulescu Buzau音遠=ドラグレスク=ブザウ 
Hair, Blond, Waist Length+
Eyes, Amber, Slit Pupils, Tsurime
Body, Kid
Clothes, Dress, Gloves, Gothic, Knee-high Boots, Lolita, Lolita Hairband
Personality, Possessive, Refined, Secretive, Selfish
Role, Antagonist
Engages in, Murder, Rape, Sexual Harassment, Torture
Subject of, Insanity
Engages in (Sexual), Bondage Sex, Double Handjob, Lesbian Sex, Vaginal Fingering
Subject of (Sexual), Cowgirl
Voiced byNojima Kana


Half Romanian, half Japanese, she comes to Yuunagi City for specific objective.

After meeting Suzuka, she becomes obsessed about her. She has a hobby of collecting human bones.