---
title: "Ubai Zero ~Saisho no Ayamachi~"
description: "The story of Gen from 20 years ago written in his point of view."
image: "https://t.vndb.org/cv/95/33895.jpg"
---

# Ubai Zero ~Saisho no Ayamachi~

![Ubai Zero ~Saisho no Ayamachi~](https://t.vndb.org/cv/95/33895.jpg)

**Alternative Title:** 奪ZERO 〜最初のあやまち〜

**Developer:** Studio Ubai

**Release date:** Nov 25, 2016

**Platform:** Windows

**Language:** Japanese

**Rating:** 6.2/10 (15 votes)

## Description
The story of Gen from 20 years ago written in his point of view.

## Characters
### Gen-san (ゲンさん)
50-60 years old.

A mysterious old man whose real name, age, and history are unknown. 

At Ubai, he mostly works as a director, and is a senior of Ryousuke. He's a renowned veteran in the industry, that even the company president respects him a lot. 

He's slim and bony, but has a youthful body, and he himself completely shaved off his head. 

Known for his legendary sex technique and large penis, but recently he's been busy rearing his possible successors, and so he's having Ryousuke appear in quite a lot of videos.

He trusts Ryousuke to an extent, and thus he doesn't say anything with the way Ryousuke does his job.

His hobby from long ago was to seduce another man's woman. He's known to have impregnated lots of wives and fiancees in the past. 

[Translated from Official Sites [url=http://www.ubai.org/ubai/ubai_chara.html]1[/url],[url=http://www.ubai.org/ubai_again/ubai_chara.html]2[/url],[url=http://www.ubai.org/ubai_ending/ubai_chara.html]3[/url]]

- **Gender:** Male
- **Hair:** Bald
- **Eyes:** Brown, Hosome
- **Body:** Slim, Pale, Old, Large Penis
- **Clothes:** Shorts, Sandals, Aloha Shirt
- **Personality:** Ore, Womanizer, Mysterious
- **Subject of:** Blackmail
- **Role:** Father, AV Actor, Father-in-law
- **Engages in:** Drugging

### Tsuyuguchi Shizune (露口 静音)
- **Gender:** Female
- **Hair:** Brown, Long, Curtained, Straight, Spiky Bangs, Parted in Middle
- **Body:** Slim, Pale, Young-adult, Big Breasts
- **Engages in:** Cooking, Drinking, Infidelity, Childbirth
- **Clothes:** Coat, Skirt, Wedding Ring, Decorative Belt
- **Role:** Wife, Mother
- **Subject of:** Arranged Marriage, Being Drugged
- **Eyes:** Garnet
- **Personality:** Docile, Curious, Watashi, Promiscuous
- **Voiced by:** Himari

### Tsuyuguchi Keiji (露口 啓司)
- **Gender:** Male
- **Hair:** Black, Short
- **Body:** Pale, Young-adult
- **Eyes:** Black, Itome
- **Clothes:** Suit, Necktie
- **Personality:** Boku, Insightful
- **Role:** Husband, Father, Non-blood-related Father
- **Subject of:** Arranged Marriage

## Shops
- [Official Website](http://www.ubai.org/ubai_complete/index.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=923021)

## Releases
### Japanese
- **2016-11-25**: Ubai Complete ~Hito no Onna, Zenbu Urimasu~ - [Official website](http://www.ubai.org/ubai_complete/), [Getchu](http://www.getchu.com/soft.phtml?id=923021)
- **2016-11-25**: Ubai Zero ~Saisho no Ayamachi~ - [Official website](http://www.ubai.org/ubai_complete/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=24154), [DMM](https://dlsoft.dmm.co.jp/detail/bpartner_0037/)
- **2017-02-17**: Ubai Complete ~Hito no Onna, Zenbu Urimasu~ - Download Edition - [DMM](https://dlsoft.dmm.co.jp/detail/bpartner_0038pack/)

## Tags
ADV, Male Protagonist, Only a Single Heroine, Married Heroine, Flashback, Kinetic Novel, Sex in Public Places, Anal Penetration, Promiscuous Heroine, Bald Protagonist, Multiple Penetration, Arranged Marriage, Erotic Spanking, Consensual Group Sex of One Female and Several Males, Voyeurism, Doggy Style, Female Ejaculation, Infidelity, Outdoor Sex, Fingering, Cowgirl, Oyaji Protagonist, Standing Sex, Production of Pornography (Professional), Sex in Front of an Audience, Heroine with Children, Protagonist with Children, Reverse Missionary, Quickie Fix Position, Only Adult Heroines, Playboy Protagonist, Double Handjob, Double Penetration (Group Sex), Heroine Having Sex with Others, Only Non-Virgin Heroines, Heroine with Big Breasts

## More Games from Studio Ubai
- [Ubai ~Hito no Onna, Urimasu~](https://pinovel.net/v15581)
- [Ubai Again ~Hito no Onna, Mata Urimasu~](https://pinovel.net/v16880)
- [Eigyoubu Dai 4 Ka Mesubuta Choukyou Shiiku Gakari](https://pinovel.net/v18441)
- [Ubai Ending ~Hito no Onna, Saigo made Urimasu~](https://pinovel.net/v18920)
- [Ubai Gakuen ~Ichizu de Kawaii Shimai ga Shiranu Ma ni Ochiteiku~](https://pinovel.net/v20341)
- [Ubai Zero ~Saisho no Ayamachi~](https://pinovel.net/v22146)
- [Ubai Byoutou ~Netorare Karute~](https://pinovel.net/v21020)
- [Psy-min Appli -Akumu no Netorare Game-](https://pinovel.net/v21148)
- [Ubawarezuma ~Kan'ochi Onsen Shain Ryokou~](https://pinovel.net/v23000)
- [Psy-min Appli Another -Owaranai Netorare Game-](https://pinovel.net/v24150)
- [Gakuen Inkitan ~Kaori Tsuki no Shoujo~](https://pinovel.net/v33290)
- [Ubai Tsuu - NTR Haitatsu Service Eigyouchuu](https://pinovel.net/v36122)
- [Haishinsha no Chouten ni Ore wa Tatsu! - Subete o Ubae! Mezase 100 Man Shasei!!](https://pinovel.net/v41664)
- [Kisei Otoko ~Hitozuma wa Itsu no Ma ni ka Ore ni Kisei Sareteiru~](https://pinovel.net/v44210)
- [Jouryuu Tsuma ~Celeb Oyako ni Fukushuu WakaraSEX~](https://pinovel.net/v49470)
- [Sex Friend Club ~Ecchi na Kanojo wa Suki Desu ka?~](https://pinovel.net/v51460)
- [NTR Mansion: Junshin Sarezuma wa Tawaman Furin no Numa e Shizumu](https://pinovel.net/v54518)
- [Hitozuma Circle ~Otto wa Aishiteru Kedo Moteamashita Seiyoku wa Kaishou Shitai~](https://pinovel.net/v55471)

---
*View the full details at [pinovel.net/v22146](https://pinovel.net/v22146).*

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