---
title: "OH!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~"
description: "One morning, our protagonist, Maikuro Mitsuru, suddenly found himself shrunk to a very small size. Using that to his advantage, he started doing erotic things t"
image: "https://t.vndb.org/cv/48/22548.jpg"
---

# OH!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~

![OH!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~](https://t.vndb.org/cv/48/22548.jpg)

**Alternative Title:** OH!!マイクロマン ～小さくなって女の子の色んなトコロに入っちゃお～

**Developer:** MBS Truth -Deep Blue-

**Release date:** Dec 26, 2014

**Platform:** Windows

**Language:** Japanese

**Rating:** 7.3/10 (59 votes)

## Description
One morning, our protagonist, Maikuro Mitsuru, suddenly found himself shrunk to a very small size. Using that to his advantage, he started doing erotic things to various girls. Peeping the toilet and girls' skirts, sneaking into girls' clothes and underwear, entering the bathroom as he likes. Thinking everyday about new erotic ideas which can only be done because of his size, he started living a "fulfilling" life. 

[Translated from [2DFan](https://www.2dfan.com/subjects/2611)]

## Characters
### Maikuro Mitsuru (舞黒 満)
- **Gender:** Male
- **Hair:** Brown, Ahoge
- **Eyes:** Blue
- **Personality:** Pervert
- **Role:** Older Brother
- **Body:** Tiny

### Agatsuma Kanae (吾妻 奏恵)
A beautiful wife neighbor. Always greets the protagonist affably. She seems to be pregnant. 
Her husband is a busy man and seems to work overseas as he is nowhere to be seen.

"Mitsuru-kun, can I rely on you in the future?"

- **Gender:** Female
- **Measurements:** Height: 159cm, Bust-Waist-Hips: 92-59-90cm, G cup
- **Birthday:** 19 November
- **Hair:** Brown, Ahoge, Ponytail, Long, Intake, V Bangs, Sidehair
- **Body:** Pale, Young-adult, Huge Breasts
- **Eyes:** Blue, Central Heterochromia
- **Clothes:** Necklace, Bracelet, Ribbon Hair Tie
- **Role:** Wife, Neighbor
- **Subject of:** Pregnancy, Pregnancy (by illegitimate partner)
- **Personality:** Kind
- **Engages in:** Infidelity, Lactation
- **Voiced by:** Kimishima Risa

### Azumi Mayuri (安角 麻由莉)
An onee-san who lives near protagonist's house.
Protagonist usually saw her on the way to school and on weekends.

She seems to be a university student as she wears a similar uniform.  
Protagonist idolized her.

"Someone seems to follow me recently."

- **Gender:** Female
- **Measurements:** Height: 166cm, Bust-Waist-Hips: 94-58-89cm, G cup
- **Birthday:** 25 January
- **Hair:** White, Waist Length+, Spiky Bangs
- **Body:** Pale, Huge Breasts
- **Eyes:** Red
- **Personality:** Refined
- **Role:** University Student, Part-time Worker, Ane Act
- **Clothes:** String Ribbon Tie, Blazer School Uniform
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Fujimura Suzuka

### Kochou Miyabi (胡蝶 雅美)
A rich ojousama from the tennis club. Her tennis skill is top-notch, to the point that she can get high ranks even on a national match. Both boys and girls idolized her but boys feel it is hard to approach her.

"Recently, my body condition is bad. Can't seem to focus on tennis."

- **Gender:** Female
- **Measurements:** Height: 160cm, Bust-Waist-Hips: 88-58-85cm, E cup
- **Birthday:** 24 September
- **Hair:** Blond, Ponytail, Waist Length+, Wavy, Curtained
- **Body:** Slim, Pale, Big Breasts
- **Clothes:** School Uniform
- **Eyes:** Blue
- **Personality:** Refined, Watakushi, Keigo
- **Role:** Wealthy, Yamato Nadeshiko, Popular, Ojousama, School Tennis Club Member
- **Engages in:** Tennis
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Yukino Misato

### Koide Kei (恋出 恵)
The homeroom teacher of protagonist's class.
Very popular among boys.
Likes to tease students, especially boys, with erotic postures occasionally.

"Apparently, there is a strange creature roaming around the school. Caution everybody."

- **Gender:** Female
- **Measurements:** Height: 167cm, Bust-Waist-Hips: 95-63-90cm, G cup
- **Birthday:** 7 October
- **Hair:** Red, Long, Curtained
- **Body:** Pale, Huge Breasts
- **Eyes:** Amber
- **Clothes:** Vest, Miniskirt, Garter Belt Stockings, Blouse
- **Engages in:** Teasing
- **Role:** Exhibitionist, Homeroom Teacher
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Arikawa Mana

### Maikuro Mai (舞黒 麻依)
The protagonist's younger sister. 
She seems to like her brother as she always comes to wake him up in the morning.
Usually warns her brother about his living style.

Goes to different school than protagonist.

"Recently, I feel weird when I think of onii-chan."

- **Gender:** Female
- **Measurements:** Height: 155cm, Bust-Waist-Hips: 87-56-86cm, D cup
- **Birthday:** 2 December
- **Hair:** Pink, Short, Spiky Bangs
- **Body:** Teen, Pale, Big Breasts
- **Eyes:** Pink
- **Role:** Younger Sister
- **Personality:** Brother Complex
- **Clothes:** Sailor School Uniform
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Yatsuhashi Kinako

### Majika Madoka (間鹿 まどか)
A cheerful and energetic classmate of protagonist.

Her popularity among boys is second only to Yuna. She and Yuna are very good friends and always together.

She doesn't like studying. Even though she isn't in any club, her athletic ability is superb. 

"Recently, my privates feel itchy during class. Makes me want to pee."

- **Gender:** Female
- **Alias:** Maji
- **Measurements:** Height: 161cm, Bust-Waist-Hips: 88-59-87cm, F cup
- **Birthday:** 3 October
- **Hair:** Short, Side Tail, Spiky Bangs, Orange
- **Body:** Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Naked, School Swimsuit
- **Eyes:** Green
- **Personality:** Friendly, Energetic, Cheerful
- **Role:** Friend, Classmate
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Ayane Mako

### Mamiya Kotomi (間宮 琴未)
A fellow student of protagonist's school.

As a member of basketball club, she trains enthusiastically everyday. She spends most morning and after-school times on club activity. Always takes a shower after that. 

"My body feels weird recently... I wonder is it because of the stress from training?"

- **Gender:** Female
- **Measurements:** Height: 176cm, Bust-Waist-Hips: 89-60-87cm, D cup
- **Birthday:** 14 July
- **Hair:** Red, Short, V Bangs
- **Body:** Slim, Pale, Big Breasts, Tall
- **Clothes:** School Uniform, Hairpin, Sports Uniform
- **Personality:** Hard Worker, Energetic
- **Eyes:** Blue
- **Role:** School Basketball Club Member
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Kazahana Mashiro

### Shizuhara Yumika (静原 友美佳)
An innocent and pure girl protagonist met in the park. 
Her parents work late and thus there is no one at home so she comes to park everyday. 

Her parents' workplace reassigned frequently so she has to move from place to place and hence has trouble making friends.

"Fairy-san, can I call you onii-chan?"

- **Gender:** Female
- **Measurements:** Height: 145cm, Bust-Waist-Hips: 74-59-79cm, A cup
- **Birthday:** 11 October
- **Hair:** Ahoge, Twin Tails, Cyan
- **Body:** Pale, Kid, Small Breasts
- **Items:** Book
- **Personality:** Naive
- **Eyes:** Cyan
- **Clothes:** Sailor School Uniform
- **Subject of:** Pregnancy (by illegitimate partner)
- **Role:** Imouto Act
- **Voiced by:** Yahiro Mami

### Takanagi Yuuna (高凪 優奈)
Kind and cheerful classmate of protagonist.
Very popular in class because she speaks friendly to the boys.

Her academics are average and her demeanor is girlish. 

"Recently, I'm really interested in Maikuro-kun. I wonder why?"

- **Gender:** Female
- **Measurements:** Height: 164cm, Bust-Waist-Hips: 91-56-88cm, F cup
- **Birthday:** 8 August
- **Hair:** Black, Waist Length+, Straight, Spiky Bangs
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Naked
- **Eyes:** Amber
- **Personality:** Friendly, Kind
- **Subject of:** Molesting, Pregnancy
- **Role:** Friend, Classmate, Popular
- **Voiced by:** Kirishima Haruna

### Yuzuno Aika (柚野 愛花)
A tomboyish girl from the swimming club. Wears a sport swimsuit to swim. Fast swimmer but has trouble gasping breaths, swallowing water instead sometimes. She has to pee frequently because of that.

She's popular among girls because of her easy-going personality.

"My body feels weird recently, I'm unable to hold my pee till the toilet."

- **Gender:** Female
- **Measurements:** Height: 156cm, Bust-Waist-Hips: 88-58-87cm, F cup
- **Birthday:** 2 March
- **Hair:** Long, Wavy, Green
- **Body:** Slim, Tanline, Big Breasts
- **Clothes:** School Uniform, Spats, Sports Swimsuit
- **Eyes:** Red
- **Personality:** Boku, Relaxed, Tomboy
- **Role:** Popular, School Swimming Club Member
- **Subject of:** Pregnancy (by illegitimate partner)
- **Voiced by:** Nanno Koto

## Shops
- [Official Website](http://mbstruth.com/omm/omm_top.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009825.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=828645)

## Releases
### Japanese
- **2014-12-26**: OH!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~ First Press Edition - [Official website](http://mbstruth.com/omm/omm_top.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21104), [Getchu](http://www.getchu.com/soft.phtml?id=828645)
- **2015-12-25**: Oh!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~ Download Edition - [Official website](http://mbstruth.com/omm/omm_top.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009825.html)

## Tags
Superpowers, ADV, School, Brother/Sister Incest, Male Protagonist, Multiple Endings, Loli Heroine, Teacher Heroine, Ojousama Heroine, Nukige, Map Movement, Group Sex of One Male and Several Females, Harem Ending, Adult Heroine, Married Heroine, Sexual Harassment, Tomboy Heroine, Perverted Protagonist, Bad Ending(s), Defloration, Sex in Public Places, More Than Seven Heroines, Heroine with Swimsuits, Missionary Position, Scat, Internal Exhibition of Sex, Impregnation, Bukkake, Anilingus, Non-penetrative Sex, Cunnilingus, Brocon Heroine, Voyeurism, Macrophilia, Urethral Sounding, Few Choices, Heroine with Tan Lines, Sex with Sleepers, Excessive Semen, Heroine with Spats, Pregnancy Ending, Standing Sex, Spoons, Bathroom Sex, Character Profiles, Soapy Massage, Voiced Thoughts, Sexual Blindfold, Tall Heroine, Unbirth, Visible Cervix Penetration, Pissing on Others, Single Boobjob, Pissing, Heroine with Huge Breasts, Heroine with Big Breasts, Scat on Others, Extremely Small Protagonist, Navel Penetration, Naked Sprites, Sex in Water, Mutual Masturbation, Pregnancy, Heroine with Sexual Experience, Pregnant Sex, Lactation During Sex, Single Blowjob, Infidelity, Discreet Phone Sex, Heroine with Ahoge, Oneesan-type Heroine, University Student Heroine, Adult Breast Sucking, Protagonist's Younger Sister as a Heroine, Sitting Sex, Energetic Heroine, Protagonist's Full Sister as a Heroine, Nipple Insertion, Discreet Sex, Blood-related Brother/Sister Incest, Yamato Nadeshiko Heroine, Ponytail Heroine, Exhibitionism, Vaginal Masturbation, Inbreeding, Imouto-type Heroine, Twin Tail Heroine, Vaginal Fingering, Piss Drinking, Quickie Fix Position

## More Games from MBS Truth -Deep Blue-
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- [Nangoku Sakunyuu ☆ Milk Island Musume. ~Hatsujou Hen~](https://pinovel.net/v13685)
- [OH!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~](https://pinovel.net/v16090)

---
*View the full details at [pinovel.net/v16090](https://pinovel.net/v16090).*

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