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 | 1.89 | 3.05 |
| Vaginal Fingering Engages in (Sexual) | 5 | 1.62 | 2.90 |
| Cunnilingus Engages in (Sexual) | 5 | 1.55 | 2.78 |
| Step Sister Role | 2 | 2.43 | 2.67 |
| Airhead Personality | 3 | 1.92 | 2.66 |
| Sex on Roof Engages in (Sexual) | 2 | 2.29 | 2.52 |
| School Science Club President Role | 1 | 3.53 | 2.44 |
| Sex in School Infirmary Engages in (Sexual) | 2 | 2.23 | 2.44 |
| Missionary Engages in (Sexual) | 3 | 1.74 | 2.41 |
| Outgoing Personality | 3 | 1.74 | 2.41 |
| Tribadism Engages in (Sexual) | 2 | 2.12 | 2.33 |
| Straight Hair | 10 | 0.95 | 2.27 |
| Relaxed Personality | 3 | 1.64 | 2.27 |
| Pervert Personality | 3 | 1.63 | 2.26 |
| Pleated Skirt Clothes | 4 | 1.40 | 2.25 |
| Sex in Classroom Engages in (Sexual) | 3 | 1.61 | 2.23 |
| Lesbian Sex Engages in (Sexual) | 4 | 1.38 | 2.22 |
| Funny Personality | 2 | 2.00 | 2.19 |
| Genderbent Sex Engages in (Sexual) | 1 | 3.11 | 2.15 |
| Shirt Clothes | 5 | 1.16 | 2.07 |
| Standing Sex Engages in (Sexual) | 2 | 1.87 | 2.05 |
| Belt Clothes | 4 | 1.27 | 2.05 |
| Ribbon Tie Clothes | 4 | 1.25 | 2.01 |
| Classmate Role | 4 | 1.23 | 1.98 |
| Trousers Clothes | 4 | 1.19 | 1.92 |
| Widow's Peak Hair | 1 | 2.76 | 1.91 |
| Effeminate Personality | 1 | 2.75 | 1.91 |
| PE Teacher Role | 1 | 2.75 | 1.90 |
| Foreign Exchange Student Role | 1 | 2.74 | 1.90 |
| Step Brother Role | 1 | 2.73 | 1.89 |
| Doggy Style Engages in (Sexual) | 2 | 1.69 | 1.85 |
| Amber Eyes | 5 | 1.03 | 1.84 |
| Shorts Clothes | 2 | 1.68 | 1.84 |
| Curtained Hair | 3 | 1.30 | 1.80 |
| Kouhai Role | 2 | 1.63 | 1.79 |
| Sixty-nine Engages in (Sexual) | 3 | 1.26 | 1.74 |
| Childhood Friend Role | 3 | 1.26 | 1.74 |
| School Nurse Role | 1 | 2.47 | 1.71 |
| Modern Tsundere Personality | 1 | 2.43 | 1.68 |
| High School Student Role | 6 | 0.85 | 1.66 |
| Blue Hair | 3 | 1.19 | 1.65 |
| Facesitting Subject of (Sexual) | 1 | 2.35 | 1.63 |
| Cunnilingus Subject of (Sexual) | 3 | 1.16 | 1.61 |
| Spiky Bangs Hair | 4 | 1.00 | 1.61 |
| Distrustful Personality | 1 | 2.29 | 1.59 |
| Eccentric Personality | 1 | 2.29 | 1.59 |
| Foreigner Role | 1 | 2.28 | 1.58 |
| Scientist Role | 1 | 2.28 | 1.58 |
| Earrings Clothes | 2 | 1.42 | 1.56 |
| Tank Top Clothes | 2 | 1.42 | 1.56 |
| Hair Tie Clothes | 2 | 1.41 | 1.54 |
| Hosome Eyes | 2 | 1.37 | 1.50 |
| Quickie Fix Subject of (Sexual) | 3 | 1.08 | 1.50 |
| Teal Hair | 1 | 2.16 | 1.50 |
| Vaginal Fingering Subject of (Sexual) | 3 | 1.08 | 1.50 |
| Accident Subject of | 1 | 2.14 | 1.48 |
| Wrinkles Body | 1 | 2.13 | 1.48 |
| School Uniform Clothes | 6 | 0.75 | 1.46 |
| Transfer Student Role | 1 | 2.02 | 1.40 |
| Butterfly Engages in (Sexual) | 1 | 2.02 | 1.40 |
| Facesitting Engages in (Sexual) | 1 | 1.97 | 1.37 |
| Teen Body | 8 | 0.62 | 1.36 |
| Clumsy Personality | 1 | 1.93 | 1.34 |
| One Piece Swimsuit Clothes | 1 | 1.92 | 1.33 |
| Slim Body | 9 | 0.58 | 1.33 |
| Younger Brother Role | 1 | 1.90 | 1.32 |
| Quickie Fix Engages in (Sexual) | 1 | 1.88 | 1.31 |
| Boyfriend Role | 1 | 1.87 | 1.29 |
| Boobjob Subject of (Sexual) | 1 | 1.86 | 1.29 |
| Homosexual Role | 1 | 1.83 | 1.27 |
| Strict Personality | 1 | 1.83 | 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 | 1.80 | 1.25 |
| Missionary Subject of (Sexual) | 2 | 1.12 | 1.23 |
| Ponytail Hair | 2 | 1.10 | 1.21 |
| Mischievous Personality | 1 | 1.73 | 1.20 |
| Teal Eyes | 1 | 1.73 | 1.20 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 1 | 1.72 | 1.20 |
| Sport Bloomers Clothes | 1 | 1.72 | 1.19 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Reserved Personality | 1 | 1.72 | 1.19 |
| Carefree Personality | 1 | 1.68 | 1.16 |
| Violet Eyes | 2 | 1.04 | 1.15 |
| Popular Role | 1 | 1.63 | 1.13 |
| Shy Personality | 1 | 1.62 | 1.12 |
| Senpai Role | 1 | 1.61 | 1.12 |
| Mole Body | 1 | 1.59 | 1.10 |
| Bondage Sex Subject of (Sexual) | 1 | 1.57 | 1.09 |
| Older Sister Role | 1 | 1.56 | 1.08 |
| Teacher Role | 1 | 1.55 | 1.08 |
| Girlfriend Role | 1 | 1.54 | 1.07 |
| Blowjob Subject of (Sexual) | 1 | 1.52 | 1.06 |
| Blowjob Engages in (Sexual) | 3 | 0.76 | 1.06 |
| Group Sex Engages in (Sexual) | 1 | 1.50 | 1.04 |
| Doggy Style Subject of (Sexual) | 2 | 0.93 | 1.02 |
| Smart Personality | 1 | 1.46 | 1.01 |
| Shoulder-length Hair | 2 | 0.92 | 1.01 |
| Teasing Engages in | 1 | 1.45 | 1.00 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Blond Hair | 2 | 0.89 | 0.97 |
| Blunt Bangs Hair | 1 | 1.40 | 0.97 |
| Masturbation Engages in (Sexual) | 1 | 1.39 | 0.96 |
| Nipple Sucking Subject of (Sexual) | 1 | 1.38 | 0.96 |
| Wavy Hair | 1 | 1.36 | 0.94 |
| Virgin Sex Engages in (Sexual) | 2 | 0.85 | 0.93 |
| Adult Body | 1 | 1.35 | 0.93 |
| Pale Body | 11 | 0.37 | 0.92 |
| Red Hair | 1 | 1.32 | 0.92 |
| Waist Length+ Hair | 2 | 0.81 | 0.89 |
| Black Hair | 2 | 0.81 | 0.88 |
| Friendly Personality | 1 | 1.22 | 0.85 |
| Young-adult Body | 2 | 0.76 | 0.84 |
| Violet Hair | 1 | 1.19 | 0.83 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.82 |
| Tareme Eyes | 1 | 1.10 | 0.76 |
| Brown Hair | 2 | 0.68 | 0.75 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Boobjob Engages in (Sexual) | 1 | 1.07 | 0.74 |
| Miniskirt Clothes | 1 | 1.06 | 0.74 |
| Sitting Sex Subject of (Sexual) | 1 | 1.06 | 0.74 |
| Kind Personality | 1 | 1.03 | 0.71 |
| Sidehair Hair | 1 | 0.98 | 0.68 |
| Cowgirl Subject of (Sexual) | 1 | 0.95 | 0.66 |
| Blue Eyes | 1 | 0.80 | 0.56 |
| 10 | 0.00 | 0.00 |