Synopsis
Slowly but surely his body is feminized, and the pleasures of the female body are irresistible…
[Synopsis]
Just out of curiosity I took a job as a medical test subject.
After being given some drugs by a beautiful futanari doctor,
my body progressively became more and more feminine.
It became more sensitive.
My breasts swelled in size.
My penis, was replaced with a vagina.
… and I became captive to the pleasures of the female body…
A full color TSF manga featuring the gradual transition of male to female.
The second half of the story contains sexual content with the futanari doctor. OF COURSE~!
[Contents]
16 main manga pages (of which two are variant pages)
136 pages total including all variants
(* not including white page / colophon, but including duplicate pages)
1433×2024 image resolution
In addition to the main contents, the following variations are included:
—————————————-
– Dr. Futanari without glasses
– Without pubic hair
– Dr. Futanari with testicles
– Without pubic hair & Dr. Futanari with testicles
– Protagonist with tanned skin
– Protagonist with tanned skin & Dr. Futanari with testicles
– without dialogue, speech bubbles, onomatopeia, etc. text
—————————————-
Also includes PDF file format!
Author: Jun Katou
| Circle | KATOYA |
| Tags | R18, Manga, JPEG, PDF file, English |
| Price | 330JPY |
Editorial Review
Transformation erotica anchored by medical fantasy remains a perennial fixture in the adult doujin space, but this entry distinguishes itself through its deliberate pacing and the inversion of typical power dynamics—here, the futanari doctor maintains clinical authority throughout the feminization process, transforming what could be a simple body-horror fantasy into something closer to coercive medical play.
The work’s structural strength lies in its bifurcated narrative: the first half commits genuinely to gradual TSF progression—sensitivity escalation, breast development, genitalia reconstruction—before pivoting to explicit sexual content with the doctor in the second half. This isn’t a tease-and-flip structure common to rushed doujin; it’s methodical world-building that earns its payoff. The 16-page core with 136 total pages including variants suggests serious attention to customization options, a production choice that signals respect for reader preferences rather than token variation padding. The 1433×2024 resolution indicates professional scanning or native digital art, avoiding the compression artifacts that plague rushed releases.
Tag-wise, the TSF-plus-futanari-doctor combination remains relatively uncommon in English-language releases, positioning this squarely for collectors who want their transformation erotica paired with specific power-play dynamics rather than generic scenarios. The full-color format is crucial—TSF narratives depend on visual progression to land emotionally, and black-and-white work struggles to register bodily changes with the same impact.
The clinical framing and systematic bodily alteration appeal specifically to readers who eroticize loss of autonomy through pharmaceutical means rather than magic or accident. If your attraction pivots on medical scenarios where consent becomes increasingly complicated, or if gradual TSF transformation with futanari dominance is your particular intersection of interests, this delivers exactly that without dilution.
Essential for TSF enthusiasts seeking methodical, medically-framed transformation with variant customization options.
Get “[ENG Ver.] I’m a Test Subject ” on DLsite
English Version → Free TrialJapanese Original
This Week’s Top Rankings:
📖 How to buy on DLsite — step-by-step guide
💳 Payment methods for overseas buyers (Visa/MC declined?)
Official English version available ↓
