Synopsis: Yumiko's father catches her masturbating in her room with her vibrator. He is outraged at what he sees, but quickly thinks of a solution. He then detaches his penis from his body and gives it to his daughter so that she may continue.
Romaji: "Takkuru Ojisan" Translation: "Mr. Tackle" First Appearance: n/a Pages: 4 Contents: cross-dressing, panties, school uniform
Synopsis: Yumiko is rushing along the sidewalk when she bumps into "Mr. Tackle" who is wearing a football helment and shoulder pads, but no shirt. The impact knocks the girl to the ground, at which point Mr. Tackle rips off all of her school uniform and dresses himself in it. When Yumiko regains consciousness and notices what the man has done with her clothes, Mr. Tackle lives up to his name and knocks her out once more before heading off into the sunset.
Romaji: "Mokumoku Yumiko-chan" Translation: "Yumiko-chan's Clouds of Smoke" First Appearance: n/a Pages: 4 Contents: masturbation (fingering), sweaty, panties
Synopsis: Yumiko is masturbating heavily on the roof of a building until she notices smoke emitting from her vagina. She touches her private area and feels that it is now incredibly hot. She then quickly notices that the back of her skirt caught fire, prompting her to quickly disrobe. Luck shines upon her, however, when it begins to rain, quenching the fire at long last.
Synopsis: Yumiko is performing fellatio on a boy in a classroom before he vaginally penetrates her. She fellates him once more and then invites him to have anal sex with her. An awkward moment then occurs when the school janitor walks in on them.
Synopsis: Yumiko wakes up in the morning, only to find that she has overslept. Her bottomless older brother, equipped with an enormous penis and testicles, enters her bedroom and rips off her clothes. He then vaginally penetrates her and, moments later, his ejaculation launches her out the window and onto the roof of the school.
Synopsis: Yumiko masturbates as she walks down the street, unsure at how she can get sexual relief. After quickly tearing off her clothes, a light bulb appears above Yumiko's head. She then grabs the bulb and uses it to masturbate once more. After tossing it aside, another much, much larger light bulb appears above her, which she also uses to penetrate her vagina. However, after accidentally falling backwards, the bulb shatters inside her body and she is taken away in an ambulence.
Synopsis: The story begins with Yumiko performing fellatio on a man. Shortly after, she does the same for a large group of men which leads to bukkake. Finally, back at home, Yumiko discovers that all of the semen that she's received has transformed her into a futanari, and she tries hard to perform fellatio on herself.
Synopsis: The story begins with Yumiko performing fellatio on a boy sitting on a desk inside of a classroom. She then pulls down her panties and requests that he perform cunnilingus. The boy does so, but exhausts himself before Yumiko is able to climax. A teacher then steps into the room to continue where the boy left off, but the same result happens. The story ends inside of a locker room, where Yumiko has exhausted the entire school softball team and is masturbating with a baseball bat in her vagina and a baseball inserted into her anus.
Romaji: "Kitakaze to Taiyou" Translation: "The North Wind and the Sun" First Appearance: n/a Pages: 8 Contents: sweaty, school uniform, hetero, vaginal sex
Synopsis: The North Wind and the Sun are having a confrontation when they spot Yumiko walking on the sidewalk down below. The sun increases it's rays in order to make the girl very hot. Angered by this, the North Wind blows hard, lifting up Yumiko's skirt. Suddenly, a man with the word 「おなにい」 (onanii) printed across his shirt shows up, tears off Yumiko's clothes and begins having sex with her, much to the Sun and North Wind's delight.
Romaji: "Kaaman" Translation: "Car Man" First Appearance: n/a Pages: 8 Contents: breast sucking, anal fingering, fellatio, lustful drooling, school uniform, hetero, vaginal sex
Synopsis: Yumiko is rushing along the sidewalk when she bumps into a naked man wearing goggles who has wheels for both arms and legs. Yumiko strips out of her uniform and begins having vaginal sex with Car-Man and then following up with fellatio.
Romaji: "Sanpo" Translation: "A Stroll" First Appearance: n/a Pages: 4 Contents: extreme insertion, masturbation (fingers), dildo
Synopsis: The story begins with Yumiko masturbating with a dildo inside of her bedroom. She quickly finds, however, that she requires a large number of simultaneous insertions, including a baseball bat and a giant carrot, in order to finish the job.
Synopsis: Yumiko is masturbating in her bed when Santa Claus enters through her window; bringing with him his two naked, half-man/half-reindeer. Yumiko fellates one of the reindeer-men while the other performs cunnilingus on her, all while Santa perversely watches. The two then double-penetrate the girl, causing Santa's erection to swell so mightily that he quickly disrobes and enters the girl himself. When Yumiko finally awakes on Christmas morning, she is delighted to see the naked Santa still sleeping in her bed.
Synopsis: Yumiko is masturbating with a dildo in her bed when Uncle Rabbit, an old man wearing glasses and a bunny costume, enters through her window. She is immensely excited to see his erection beneath his suit, only to discover that his penis is shaped like a carrot. Yumiko fellates Uncle Rabbit while he stimulates her vagina with the dildo, followed by multiple carrot insertions. The man then has anal sex with her before departing.
Romaji: "Nurunuru Yumiko-chan" Translation: "Slimy Yumiko-chan" First Appearance: n/a Pages: 6 Contents: masturbation (fingers), panties, school uniform
Synopsis: A story about Yumiko masturbating in her bath tub which concludes with the tub being completely filled up with her vaginal ejaculate.
Romaji: "Tsukushi" Translation: "Scouring Rush" First Appearance: n/a Pages: 4 Contents: sweaty, school uniform, vaginal sex
Synopsis: Yumiko is rushing along the sidewalk when she bumps into a Scouring Rush growing out of the ground. After taking a quick glance to see if anyone is watching, she then tears off all of her clothes and lowers her vagina down onto the plant. After climaxing, Yumiko returns home. The next morning, she is both surprised and delighted to see that three new Scouring Rush have sprouted from her vagina.
Romaji: "Haru ga Kita" Translation: "Spring Has Come" First Appearance: n/a Pages: 4 Contents: yuri, kissing, anal sex, double penetration (1 anal, 1 vaginal), lustful drooling, school uniform, vaginal sex
Synopsis: A young girl is rushing along the sidewalk when she bumps into Yumiko, who still has the three Scouring Rush growing out of her vagina from the previous story; a sight which the former girl is delighted to see. The two females quickly disrobe and Yumiko use her plant to double-penetrate the girl. After climaxing, the two are again elated to find that the new girl now has three Scouring Rush growing from her own vagina, as well as two more from her anus.
Synopsis: A young man is rushing along the sidewalk when he bumps into Yumiko. Immediately upon seeing her panties, the man gets an erection. The girl takes his penis and begins to fellate him. However, when he cannot hold back any longer and pulls down her panties, he sees that she does not have a vagina, and is left to sulk in the street.
Romaji: "Jietto Yumiko-chan" Translation: "Jet Yumiko-chan" First Appearance: n/a Pages: 8 Contents: wanton invitation, sweaty, anal sex, school uniform, vaginal sex
Synopsis: Yumiko is rushing along the sidewalk when she pauses to push some buttons on her wristwatch. At that moment, a large aircraft flies through the sky towards her direction. Relieved, Yumiko tears off all of her clothes and bends over for the jet to take aim. Two dildos attached to the aircraft directly penetrate Yumiko's vagina and anus and two metal panels close in around her breasts to secure her. Yumiko then blasts off through the sky in her jet-suit, but when she realizes that she is too late to make it to school on time, she presses a button on her wristwatch once again. A laser cannon attached to the jet then takes aim and fires at the school, destroying it entirely.
Romaji: "Netsu Otoko" Translation: "Heat Man" First Appearance: n/a Pages: 6 Contents: hetero, vaginal sex
Synopsis: Yumiko is rushing along the sidewalk in a downpour of rain when she bumps into Heat Man, who is wearing a speedo. The girl then tears off all of her clothes and has vaginal sex with him. However, when her body gets too hot, she has him pull out. Yumiko is then shocked to see that his ejaculate was able to melt a nearby wall.
Synopsis: Yumiko's clitoris and nipples become large as she gets aroused. She walks down the sidewalk wearing a blindfold with her hands bound behind her back which soon leads her to being gang-banged and bukkakied.
Synopsis: Yumiko is waiting naked behind a building at night when two male perverts walk by. Upon spotting her, they immediately double penetrate her. One of the perverts then presses a button on a small remote control and within moments, an enormous crowd of men come rushing to the scene to gangbang and then bukkake Yumiko, to both her amazement and delight. Then, to finish things off, the penises of all the men become tentacle-like and penetrate her all at once. Yumiko then walks back home; fisting both of her lower orifices at once and feeling very satisfied.
Romaji: "Batsu" Translation: "Butts" First Appearance: n/a Pages: 8 Contents: gangbang, exhibitionism, bukkake, fellatio, anal sex, double penetration (1 anal, 1 vaginal), panties, school uniform, hetero, vaginal sex
Synopsis: Yumiko is rushing along the sidewalk as usual. When she finally arrives at school, the teacher confronts her. She is then groped and gangbanged by her fellow students, and then forced to walk home naked with her hands tied behind her back.
Romaji: "The Ero Mizugi" Translation: "The Erotic Swimsuit" First Appearance: n/a Pages: Contents: bikini, masturbation (male)
Synopsis: Yumiko is rushing along the sidewalk when she finds herself splashed with water. Nearby, she spots a microkini and decides to change into it. Within moments, several guys gather around her and begin shedding their clothes. They then pull off Yumiko's swimsuit, but just as she braces for the forthcoming rape, the men all ejaculate from the sight of her and take off.
Romaji: "GoGo Yumiko-chan!" Translation: "GoGo Yumiko-chan!" First Appearance: n/a Pages: 8 Contents: nipple tweak, masturbation (fingers), fellatio, anal sex, large nipples, hetero, vaginal sex
Synopsis: Yumiko wakes up in the middle of the street, naked and covered in fluids. Still ever aroused, she begins masturbating and pinching her nipples. She fantasizes herself installed as a urinal, with her arms and legs attached back into the wall, to help the process along. Still horny, she rushes off and bumps into an old man, who then has sex in all three of her orifices. The man ejaculates all over Yumiko's body and the girl thanks him and runs off.
Synopsis: Yumiko is rushing along the sidewalk, naked and covered in fluids, when out from nowhere, Satan flies from the sky in an attempt to attack her. He misses, however, and gets stuck in the concrete below.
Synopsis: A continuation from chapter 1, futanari Yumiko now has a large number of foreskins which house multiple penises.
futanari [❷❸], multiple male genitalia, dildo, school uniform, multi-nipple breasts, large nipples, multiple insertions
Futanari types: ❶ - Female to futanari transformation. ❷ - Futanari character has no testicles. ❸ - Futanari character's penis grows from her pubic mound. ❹ - Futanari character's penis is her giant clit.