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

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~

TitleOh!! Micro-Man ~Chiisaku Natte Onna no Ko no Ironna Tokoro ni Haicchao~
Original titleOH!!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~
LengthMedium (10 - 30 hours)
DeveloperMBS Truth -Deep Blue-
Publishers MBS Truth


One morning, our protagonist's, Maikuro Mitsuru, suddenly found himself being shrank to a very small size. Using that to the advantage, he started doing erotic things to various girls.

Peeping the toilet and girls' skirts, sneaking into girls' clothes and underwears, entering the bathroom as he like.

Thinking everyday about new erotic ideas which can only be done because of his size , he started living a "fulfilling" life.

( Translated from hgamecn )

Main characters

Agatsuma Kanae
Agatsuma Kanae吾妻 奏恵 
MeasurementsHeight: 159cm, Bust-Waist-Hips: 92-59-90cm
Birthday19 November
Hair, Ahoge, Brown, Long
Eyes, Blue
Body, Adult, Average Height, E+ Cup, Pale
Personality, Kind
Role, Wife
Engages in, Infidelity, Lactation
Subject of, Pregnancy
Subject of (Sexual), Unbirthing
Voiced byKimishima Risa


a beautiful wife neighbor.
Always greet the protagonist affably.

Seems to be pregnant.
Her husband is a buys man and seems to work oversea as he is nowhere to be seen.

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

Azumi Mayuri
Azumi Mayuri安角 麻由莉 
MeasurementsHeight: 166cm, Bust-Waist-Hips: 94-58-89cm
Birthday25 January
Hair, Waist Length+, White
Eyes, Red
Body, Average Height, E+ Cup, Pale
Personality, Refined
Role, Part-time Worker, University Student
Subject of, Voyeurism
Engages in (Sexual), Peeing
Subject of (Sexual), Unbirthing
Voiced byFujimura Suzuka


An onee-san who lives near protagonist's house.
Protagonist usually saw her on the way to school and on weekends.

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

[Someone seems to follow me recently]

Kochou Miyabi
Kochou Miyabi胡蝶 雅美 
MeasurementsHeight: 160cm, Bust-Waist-Hips: 88-58-85cm
Birthday24 September
Hair, Blond
Eyes, Blue
Body, Average Height, E+ Cup, Pale, Slim
Personality, Refined
Role, Ojousama, Wealthy
Engages in, Tennis
Subject of (Sexual), Nipple Insertion, Unbirthing
Voiced byYukino Misato


a rich ojou-sama from the tennis club.
Both boys and girls idolized her but boys feel it is hard to approach her.

Her tennis-skill is top-notch, to the point that she can get high ranks even on a national match.

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

Koide Kei
Koide Kei恋出 恵 
MeasurementsHeight: 167cm, Bust-Waist-Hips: 95-63-90cm
Birthday7 October
Hair, Long
Body, Average Height, E+ Cup
Role, Exhibitionist, Teacher
Engages in, Teasing
Subject of (Sexual), Unbirthing
Voiced byArikawa Mana


homeroom teacher of protagonist's class.
Very popular among boys.
Like to tease students especially boys. With erotic posture occasionally.

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

Maikuro Mai
Maikuro Mai舞黒 麻依 
MeasurementsHeight: 155cm, Bust-Waist-Hips: 87-56-86cm
Birthday2 December
Hair, Pink
Eyes, Pink
Body, Average Height, D Cup, Teen
Clothes, School Uniform
Personality, Brocon
Role, Younger Sister
Subject of, Voyeurism
Engages in (Sexual), Bathroom Sex, Incest, Masturbation
Voiced byYatsuhashi Kinako


The protagonist's imouto.
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 feels weird when I think of onii-chan.]

Majika Madoka
Majika Madoka間鹿 まどか 
MeasurementsHeight: 161cm, Bust-Waist-Hips: 88-59-87cm
Birthday3 October
Hair, Orange, Short, Side Tail, Spiky Bangs
Eyes, Green
Body, Average Height, E+ Cup, Pale, Slim
Clothes, Naked, School Swimsuit, School Uniform
Personality, Energetic, Friendly
Role, Classmate
Subject of, Voyeurism
Engages in (Sexual), Peeing, Scat
Voiced byAyane Mako


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

[Recently, my privates feels itchy during class. Makes me want to pee]

Mamiya Kotomi
Mamiya Kotomi間宮 琴未 
MeasurementsHeight: 176cm, Bust-Waist-Hips: 89-60-87cm
Birthday14 July
Hair, Red, Short
Eyes, Blue
Body, Pale, Slim, Tall
Clothes, Hairpin, School Uniform, Sports Uniform
Personality, Energetic, Hardworker
Role, School Basketball Club Member
Subject of (Sexual), Unbirthing
Voiced byKazahana Mashiro


A fellow student of protagonist's school.
as a member of basketball club, she trains Enthusiastically everyday.

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?]

Shizuhara Yumika
Shizuhara Yumika静原 友美佳 
MeasurementsHeight: 145cm, Bust-Waist-Hips: 74-59-79cm
Birthday11 October
Hair, Green, Twin Tails
Eyes, Green
Body, Kid, Pale, Short
Clothes, School Uniform
Items, Book
Engages in (Sexual), Peeing
Voiced byYahiro Mami


an innocent and pure girl protagonist met on 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?]

Takanagi Yuna
Takanagi Yuna高凪 優奈 
MeasurementsHeight: 164cm, Bust-Waist-Hips: 91-56-88cm
Birthday8 August
Hair, Black, Waist Length+
Eyes, Black
Body, Average Height, E+ Cup, Pale, Slim, Teen
Clothes, Naked, School Uniform
Personality, Friendly, Kind
Role, Classmate
Subject of, Molesting, Voyeurism
Voiced byKirishima Haruna


Kind and cheerful classmate of protagonist.
Very popular in class because she speaks to guys friendly.

Her academics is average and her demeanor is girlish.

[Recently, I'm really interested in maikuro-kun. I wonder why?]

Yuzuno Aika
Yuzuno Aika柚野 愛花 
MeasurementsHeight: 156cm, Bust-Waist-Hips: 88-58-87cm
Birthday2 March
Hair, Green
Eyes, Red
Body, Average Height, Slim, Tanline
Clothes, School Uniform, Spats, Sports Swimsuit
Role, School Swimming Club Member
Engages in (Sexual), Peeing
Voiced byNanno Koto


A tomboyish girl from the swimming club.
Wears a sport swimsuit to swim.

Popular among girls because of her easy-going personality.
Fast swimmer but has trouble gasping breaths, swallowing water instead sometimes.
Has to pee frequently because of that.

[Body feels weird recently, unable hold my pee till the toilet.]