No matter how hard he tries, Aihara Takuya is just a weakling. Not only the boys, but the girls pick on him too! His step sister, Natsumi, the president of his school's chemistry club, Mami, and even his childhood friend, Asuka, they all enjoy teasing him. Just when he thinks his life couldn't get any worse, he spills some vials of chemicals while cleaning up his school's chemistry room, splashing some onto his body as well. He looks down to assess the mess, and finds a new pair of breasts sticking out of his chest! He grabs them in disbelief, and discovers that he's been transformed into a girl! And so begins Takuya's hilarious erotic adventure to search for a cure. Along the way he discovers a whole new world of experiences, some welcome and others not. Will he find a way back to normal, or will he be trapped in a girl's body for the rest of his life? [Edited from JAST USA]
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Sex Change (Male to Female) Subject of | 2 | 3.01 | 3.31 |
| School Science Club Member Role | 2 | 2.94 | 3.23 |
| Schoolmate Role | 4 | 1.87 | 3.02 |
| Vaginal Fingering Engages in (Sexual) | 5 | 1.62 | 2.91 |
| Cunnilingus Engages in (Sexual) | 5 | 1.56 | 2.80 |
| Step Sister Role | 2 | 2.44 | 2.68 |
| Airhead Personality | 3 | 1.91 | 2.65 |
| Sex on Roof Engages in (Sexual) | 2 | 2.30 | 2.53 |
| Sex in School Infirmary Engages in (Sexual) | 2 | 2.24 | 2.46 |
| School Science Club President Role | 1 | 3.53 | 2.45 |
| Outgoing Personality | 3 | 1.76 | 2.44 |
| Missionary Engages in (Sexual) | 3 | 1.75 | 2.42 |
| Tribadism Engages in (Sexual) | 2 | 2.12 | 2.33 |
| Straight Hair | 10 | 0.96 | 2.29 |
| Pervert Personality | 3 | 1.65 | 2.29 |
| Relaxed Personality | 3 | 1.64 | 2.28 |
| Pleated Skirt Clothes | 4 | 1.41 | 2.28 |
| Sex in Classroom Engages in (Sexual) | 3 | 1.61 | 2.23 |
| Lesbian Sex Engages in (Sexual) | 4 | 1.38 | 2.23 |
| Funny Personality | 2 | 1.99 | 2.19 |
| Genderbent Sex Engages in (Sexual) | 1 | 3.10 | 2.15 |
| Standing Sex Engages in (Sexual) | 2 | 1.88 | 2.07 |
| Shirt Clothes | 5 | 1.15 | 2.07 |
| Belt Clothes | 4 | 1.28 | 2.06 |
| Ribbon Tie Clothes | 4 | 1.24 | 2.00 |
| Classmate Role | 4 | 1.23 | 1.98 |
| Trousers Clothes | 4 | 1.21 | 1.95 |
| PE Teacher Role | 1 | 2.75 | 1.91 |
| Effeminate Personality | 1 | 2.75 | 1.91 |
| Widow's Peak Hair | 1 | 2.75 | 1.91 |
| Step Brother Role | 1 | 2.73 | 1.90 |
| Foreign Exchange Student Role | 1 | 2.73 | 1.89 |
| Doggy Style Engages in (Sexual) | 2 | 1.70 | 1.86 |
| Shorts Clothes | 2 | 1.67 | 1.84 |
| Amber Eyes | 5 | 1.02 | 1.83 |
| Curtained Hair | 3 | 1.30 | 1.80 |
| Kouhai Role | 2 | 1.62 | 1.78 |
| Sixty-nine Engages in (Sexual) | 3 | 1.25 | 1.74 |
| Childhood Friend Role | 3 | 1.25 | 1.73 |
| School Nurse Role | 1 | 2.46 | 1.70 |
| Modern Tsundere Personality | 1 | 2.44 | 1.69 |
| Blue Hair | 3 | 1.19 | 1.64 |
| Facesitting Subject of (Sexual) | 1 | 2.37 | 1.64 |
| High School Student Role | 6 | 0.84 | 1.63 |
| Spiky Bangs Hair | 4 | 1.01 | 1.63 |
| Cunnilingus Subject of (Sexual) | 3 | 1.17 | 1.62 |
| Distrustful Personality | 1 | 2.30 | 1.60 |
| Eccentric Personality | 1 | 2.30 | 1.59 |
| Foreigner Role | 1 | 2.27 | 1.57 |
| Scientist Role | 1 | 2.27 | 1.57 |
| Tank Top Clothes | 2 | 1.43 | 1.57 |
| Earrings Clothes | 2 | 1.42 | 1.56 |
| Hair Tie Clothes | 2 | 1.41 | 1.55 |
| Teal Hair | 1 | 2.16 | 1.50 |
| Hosome Eyes | 2 | 1.36 | 1.50 |
| Vaginal Fingering Subject of (Sexual) | 3 | 1.08 | 1.50 |
| Quickie Fix Subject of (Sexual) | 3 | 1.08 | 1.49 |
| Wrinkles Body | 1 | 2.14 | 1.49 |
| Accident Subject of | 1 | 2.13 | 1.48 |
| School Uniform Clothes | 6 | 0.74 | 1.43 |
| Butterfly Engages in (Sexual) | 1 | 2.04 | 1.41 |
| Transfer Student Role | 1 | 2.01 | 1.39 |
| Facesitting Engages in (Sexual) | 1 | 2.00 | 1.38 |
| Teen Body | 8 | 0.61 | 1.35 |
| Clumsy Personality | 1 | 1.93 | 1.34 |
| One Piece Swimsuit Clothes | 1 | 1.91 | 1.33 |
| Younger Brother Role | 1 | 1.90 | 1.32 |
| Slim Body | 9 | 0.57 | 1.32 |
| Quickie Fix Engages in (Sexual) | 1 | 1.89 | 1.31 |
| Boyfriend Role | 1 | 1.87 | 1.30 |
| Boobjob Subject of (Sexual) | 1 | 1.87 | 1.30 |
| Strict Personality | 1 | 1.85 | 1.28 |
| Homosexual Role | 1 | 1.84 | 1.27 |
| Bob Cut Hair | 1 | 1.82 | 1.26 |
| Short Hair | 7 | 0.61 | 1.26 |
| Brown Eyes | 3 | 0.90 | 1.25 |
| Lab Coat Clothes | 1 | 1.79 | 1.24 |
| Missionary Subject of (Sexual) | 2 | 1.11 | 1.22 |
| Mischievous Personality | 1 | 1.74 | 1.21 |
| Ponytail Hair | 2 | 1.10 | 1.20 |
| Reserved Personality | 1 | 1.73 | 1.20 |
| Teal Eyes | 1 | 1.72 | 1.19 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Sport Bloomers Clothes | 1 | 1.71 | 1.18 |
| Carefree Personality | 1 | 1.67 | 1.16 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 1 | 1.65 | 1.14 |
| Violet Eyes | 2 | 1.04 | 1.14 |
| Popular Role | 1 | 1.64 | 1.13 |
| Mole Body | 1 | 1.62 | 1.12 |
| Shy Personality | 1 | 1.62 | 1.12 |
| Senpai Role | 1 | 1.61 | 1.11 |
| Bondage Sex Subject of (Sexual) | 1 | 1.56 | 1.08 |
| Older Sister Role | 1 | 1.55 | 1.08 |
| Girlfriend Role | 1 | 1.55 | 1.07 |
| Teacher Role | 1 | 1.55 | 1.07 |
| Blowjob Subject of (Sexual) | 1 | 1.53 | 1.06 |
| Blowjob Engages in (Sexual) | 3 | 0.76 | 1.05 |
| Smart Personality | 1 | 1.47 | 1.02 |
| Doggy Style Subject of (Sexual) | 2 | 0.92 | 1.01 |
| Teasing Engages in | 1 | 1.46 | 1.01 |
| Shoulder-length Hair | 2 | 0.91 | 1.00 |
| Group Sex Engages in (Sexual) | 1 | 1.45 | 1.00 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Blond Hair | 2 | 0.88 | 0.97 |
| Blunt Bangs Hair | 1 | 1.40 | 0.97 |
| Nipple Sucking Subject of (Sexual) | 1 | 1.39 | 0.96 |
| Masturbation Engages in (Sexual) | 1 | 1.37 | 0.95 |
| Adult Body | 1 | 1.36 | 0.94 |
| Wavy Hair | 1 | 1.36 | 0.94 |
| Virgin Sex Engages in (Sexual) | 2 | 0.84 | 0.93 |
| Pale Body | 11 | 0.37 | 0.92 |
| Red Hair | 1 | 1.32 | 0.92 |
| Black Hair | 2 | 0.81 | 0.89 |
| Waist Length+ Hair | 2 | 0.80 | 0.88 |
| Friendly Personality | 1 | 1.23 | 0.85 |
| Young-adult Body | 2 | 0.77 | 0.85 |
| Violet Hair | 1 | 1.19 | 0.82 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.82 |
| Tareme Eyes | 1 | 1.09 | 0.76 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Brown Hair | 2 | 0.68 | 0.75 |
| Miniskirt Clothes | 1 | 1.07 | 0.74 |
| Boobjob Engages in (Sexual) | 1 | 1.06 | 0.74 |
| Sitting Sex Subject of (Sexual) | 1 | 1.05 | 0.73 |
| Kind Personality | 1 | 1.04 | 0.72 |
| Sidehair Hair | 1 | 0.98 | 0.68 |
| Cowgirl Subject of (Sexual) | 1 | 0.95 | 0.66 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| 10 | 0.00 | 0.00 |