---
title: "Isaku"
description: "Unlike the sequels that follows you take on the role of Kenta, a high school student trapped by Isaku, the eldest brother of the Itou Family on the last floor o"
image: "https://t.vndb.org/cv/49/43949.jpg"
---

# Isaku

![Isaku](https://t.vndb.org/cv/49/43949.jpg)

**Alternative Title:** 遺作

**Developer:** elf

**Release date:** Aug 25, 1995

**Platform:** Windows, DOS, macOS, P98

**Language:** Japanese, Korean, Chinese (simplified)

**Rating:** 7.1/10 (116 votes)

## Description
Unlike the sequels that follows you take on the role of Kenta, a high school student trapped by Isaku, the eldest brother of the Itou Family on the last floor of an abandoned school building together with fellow classmates and a teacher. 

The main objective of the game is to have the player and his companions escape from a locked school building, and to avoid having your companions captured by Isaku.

The only way out is through a stairwell, the doors of which are locked on every floor. The player must search the rooms on each floor for clues and items that will lead him to locate the keys that will open the stairwell doors and allow him to descend to the next level and ultimately to a final confrontation with Isaku himself.

## Characters
### Kogure Kenta (小暮 健太)
- **Gender:** Male
- **Hair:** Brown
- **Clothes:** School Uniform
- **Personality:** Ore, Carefree, Smart
- **Role:** Friend, Classmate, Twelfth Grader
- **Subject of:** Confinement, Being Drugged, Completely Avoidable Death
- **Engages in:** Investigation

### Asakawa Kotomi (浅川 琴未)
- **Gender:** Female
- **Hair:** Red, Shoulder-length, V Bangs, Pubic Hair
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Clothes:** School Uniform, One Piece Swimsuit, Ribbon Hair Accessory
- **Eyes:** Blue
- **Personality:** Friendly, Refined, Kind
- **Role:** Childhood Friend, Classmate, Twelfth Grader
- **Subject of:** Confinement, Kidnapping, Being Drugged, Completely Avoidable Death
- **Voiced by:** Moritani Utane

### Itou Isaku (伊頭 遺作)
- **Gender:** Male
- **Hair:** Black, Short, Stubble, Pubic Hair
- **Body:** Pale, Adult, Ugly
- **Role:** Villain, Bisexual, Older Brother, Janitor, Infamous, Title Character
- **Eyes:** Black, Hosome
- **Clothes:** Jacket, Tank Top, Towel, Sweatpants
- **Items:** Knife
- **Personality:** Ore, Pervert, Smart, Violent
- **Engages in:** Planning, Blackmail, Murder, Kidnapping, Mass Murder, Arson, Confinement
- **Subject of:** Unavoidable Other Route Death
- **Voiced by:** Tsuji Shinpachi

### Sakaki Miyuki (榊 美由紀)
- **Gender:** Female
- **Hair:** Black, Long, Braid, Pubic Hair
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale, Small Breasts
- **Clothes:** School Uniform, Ribbon Hair Accessory, String Ribbon Tie
- **Personality:** Stoic, Cautious, Serious, Mysterious, Insightful, Watashi, Blunt
- **Engages in:** Sarcasm
- **Role:** Classmate, Older Sister, Twelfth Grader
- **Subject of:** Confinement, Completely Avoidable Death
- **Voiced by:** Hoshino Chizuko

### Akagawa Rika (赤川 里香)
- **Gender:** Female
- **Hair:** Pink, Long, Spiky Bangs, Twin Braids, Pubic Hair
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale, Small Breasts, Short
- **Clothes:** School Uniform, Glasses, Ribbon Hair Accessory, Ribbon Hair Tie, String Ribbon Tie
- **Personality:** Deredere, Reserved, Timid, Short-tempered, Coward
- **Role:** Classmate, Twelfth Grader
- **Subject of:** Confinement, Kidnapping, Completely Avoidable Death
- **Voiced by:** Hanamori Mei

### Mikihara Akemi (幹原 明美)
- **Gender:** Female
- **Hair:** Blond, Long, Straight
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Clothes:** School Uniform, Swimsuit, String Ribbon Tie, Tennis Outfit
- **Eyes:** Grey
- **Personality:** Secretive, Selfish, Coward, Talkative, Dishonest
- **Role:** Girlfriend, Friend, Classmate, Not a Virgin, School Tennis Club Member, Twelfth Grader
- **Subject of:** Psychosis, Confinement, Kidnapping, Completely Avoidable Death
- **Engages in:** Arson
- **Voiced by:** Takenouchi Minako

### Serizawa Mio (芹沢	美緒)
- **Gender:** Female
- **Hair:** Blue, Long, Pubic Hair
- **Body:** Teen, Pale, Big Breasts
- **Clothes:** Uniform, Earrings, Jacket, Necklace, String Ribbon Tie
- **Eyes:** Amber
- **Personality:** Outgoing, Stubborn, Tomboy, Energetic, Brave, Masculine Speech
- **Role:** Friend, Classmate, Twelfth Grader
- **Subject of:** Confinement, Kidnapping, Completely Avoidable Death
- **Voiced by:** Hazuki Hikari

### Shimada Jinpachi (島田 陣八)
- **Gender:** Male
- **Hair:** Brown, Short, Spiky Bangs
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Jacket, Necktie, Jeans, Belt, Sandals, Tank Top, Swim Shorts
- **Personality:** Boku, Friendly, Kind, Naive, Loyal, Dishonest, Obedient, Manipulative
- **Subject of:** Blackmail, Confinement, Teasing, Coercion, Completely Avoidable Death, Guilt
- **Role:** Friend, Classmate, School Newspaper Club Member, Twelfth Grader, Unwilling Antagonist
- **Engages in:** Kidnapping, Swimming, Betrayal, Naked (Not Sexually Involved)
- **Items:** Camera
- **Voiced by:** Hoshi Souichirou

### Soga Munemitsu (蘇我 宗光)
- **Gender:** Male
- **Hair:** Brown, Wavy, Curtained, Shoulder-length, Mullet, Parted to Side
- **Body:** Teen, Pale
- **Eyes:** Blue, Hosome
- **Clothes:** Earrings, Gakuran
- **Personality:** Ignorant, Spoiled, Arrogant, Rude, Stubborn, Envious
- **Role:** Childhood Friend, Classmate, Twelfth Grader
- **Subject of:** Confinement, Kidnapping, Completely Avoidable Death
- **Voiced by:** Miki Shin'ichirou

### Takashima Kumi (高島 久美)
- **Gender:** Female
- **Hair:** Brown, Long, Straight, Sidehair, Pubic Hair
- **Body:** Slim, Pale, Young-adult, Nail Polish, Makeup, Big Breasts
- **Eyes:** Green
- **Clothes:** Earrings, Necktie, Pantyhose, Stockings, Belt, Panties, Bra, High Heeled Shoes
- **Subject of:** Psychosis, Confinement, Kidnapping, Completely Avoidable Death
- **Role:** Not a Virgin, Homeroom Teacher
- **Personality:** Serious, Flustered, Watashi
- **Voiced by:** Yamada Miho

## Shops
- [Official Website](https://www.fanzagames-digination.com/fgremake/isaku_re/)

## Releases
### Japanese
- **1995-08-25**: Isaku - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=9731)
- **1995-08-25**: Isaku
- **1997-05-30**: Isaku - [Official website](http://web.archive.org/web/19980701105611fw_/http://www.elf-game.co.jp/lineup/isaku.htm), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=1241)
- **1999-02-26**: Isaku Renewal - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=4678)
- **2000-03-01**: Isaku - Mac Edition
- **2008-05-21**: Isaku - DMM Edition - [DMM](https://dlsoft.dmm.co.jp/detail/elf_0028/)
- **2026-12-25**: Isaku Remake - Package Edition - [Official website](https://fanzagames-digination.com/fgremake/isaku_re/)
- **2026-12-25**: Isaku Remake - Download Deluxe Edition - [Official website](https://www.fanzagames-digination.com/fgremake/isaku_re/), [DMM](https://dlsoft.dmm.co.jp/detail/fanzagames_0181/)
- **2026-12-25**: Isaku Remake - Download Regular Edition - [Official website](https://www.fanzagames-digination.com/fgremake/isaku_re/), [DMM](https://dlsoft.dmm.co.jp/detail/fanzagames_0181/)

### Korean
- **1998-09**: Yujak
- **2005-08-29**: Yujak Renewal - [Official website](http://recail.egloos.com/1695791)

### Chinese (simplified)
- **2017-11-16**: Yizuo - [Official website](http://tieba.baidu.com/p/4821652728)

## Tags
ADV, School, Rape, Kuudere Heroine, Male Protagonist, Murder Mystery, Gore, Life and Death Drama, Teacher Heroine, Heroine with Glasses, Shy Heroine, Confinement, Map Movement, Late Sexual Content, Interactive Adventure Game, Student Heroine, Heroine with Sexual Experience, High Amounts of Rape, Tomboy Heroine, Student Protagonist, Completely Avoidable Netorare, Defloration, Bad Endings with Story, Death of Hero, High School Student Protagonist, Doggy Style, Kidnapping, Panchira, Netorare Type C, Defloration by Others, Cowgirl, Pretending Hero, Production of Pornography (Amateur), Sex in Front of an Audience, Double Penetration (Group Sex), Completely Avoidable Rape by Others, Rope Bondage, Pixel Art, Single Handjob, Single Blowjob, Pissing, High School Student Heroine, Heroine with Big Breasts, Heroine with Small Breasts (Non-Loli), Framed GUI, Separate Windows, Male on Male Rape, Battle of Wits, Multiple Endings, Bad Ending(s), Animal Cruelty, Rape by Proxy, Only Avoidable Sexual Content, Escape Game

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---
*View the full details at [pinovel.net/v2340](https://pinovel.net/v2340).*

```json
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```