In a land where the Demon King has been defeated, Rex the magic doctor, runs a humble clinic. Business is booming even in peacetime, but…his patients are the most hopeless perverts in the world! From committing crimes with slimes to sticking certain appendages in man-eaters, Dr. Rex has seen it all!

Magic Doctor Rex’s Perverted Medical Record has a story and art by Daisuke Motomi. English translation is done by Jake Humphrey and lettering by Ivo Marques. Published by Yen Press (July 28, 2026).

Lucas DeRuyter
Rating:

What if, instead of focusing largely on the logistics and culture of fornicating with sex workers in a fantasy setting, the anime and manga Interspecies Reviewers instead covered the biological, social, and medical realities of sex in a world where magic is real? The result would likely look something like Magic Doctor Rex’s Perverted Medical Record, which is a Pretty Good entry in the niche genre of high-concept sex comedies. The premise of Daisuke Motomi's raunchy yet grounded take on the kinds of Dragon Quest inspired fantasy worlds common of isekai and LitRPGs is pretty succinctly captured in the title and focuses on a fantasy doctor, Rex, who reluctantly takes on clients experiencing all kinds of sexually related medical emergencies.

Largely told as a series of one-off stories with the only connective tissue being Rex and a handful of recurring characters like his nurse Velma — who is a male identifying incubus that tried to kill one of Rex's patients so he cursed him to have a human, female presenting body; making this technically an act of force feminization except Velma always had the power to change his gender as an incubus, but I digress — each chapter focuses on a new medial scenario for Rex to address. As you'd expect from a work with “Perverted” in its title, each case has a sexual dimension to it such as, a women having a slime fill her bladder after using it as a masturbation aide, a group of men who need to have their penises reattached after sticking them into man eating plants, an orc and elf couple trying to find a way to have penetrative sex despite their considerable size difference, and a woman left in a near state of constant arousal due to an unforeseen overlap in magic bolstering runic tattoos.

Magic Doctor Rex’s Perverted Medical Record is perhaps the most “not for everyone” manga I've reviewed thus far for ANN, but I ended up liking it far more than I anticipated! As a habitual reader of Defector's “What Did We Get Stuck in Our Rectums Last Year” feature and someone who had several substance-motivated conversations in college about topics like, “what kind of drugs do you think the kids at Hogwarts do?” I appreciate any work that acknowledges that people are weird little freaks and explores how that part of the human condition manifests in fantastical settings.

While some of the gags and scenarios feel a little reductive or dated, like penetrative sex being put on a pedestal or the aforementioned Velma's whole deal, the tone of Magic Doctor Rex’s Perverted Medical Record ultimately feels like a nuanced take on people's baser and weirder sexual proclivities through a more sexually examined lens. It's very much having its cake and eating it too, with this work featuring a couple that explicitly defies stereotypical gender norms for heterosexual couples, and a martial arts training montage where the wife of said couple gains the skills and techniques necessary to have anal and vaginal sex with her well-endowed husband. Also, shout-outs to translator Jake Humphrey for inventing an absolutely inspired synonym for “womb tattoo” with the delightful phrase “goon-rune.”

Honestly, if you've made it to the end of this review, you're probably going to love Magic Doctor Rex’s Perverted Medical Record and should check it out! If you do, please reach out to me and let me know, as I'd love to have people in my life I can chat with about this very specific and very fun work.

Rebecca Silverman
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Mover over, Interspecies Reviewers. You only talked about consensual, transactional sex with different species, but Magic Doctor Rex’s Perverted Medical Record gets into the nitty-gritty of being a person with sexual feelings in a fantasy land, answering burning questions like, “What happens if you listen to the rumor that attaching a slime to your clitoris makes for awesome masturbation?” or “Is a penis vs. carnivorous plant monster contest a good idea?” Of course, it also examines questions about how sex works between a gigantic orc man and his petite elven wife, so it's not all people being stupid…just, you know, mostly.

It's also one of the most delightfully bizarre books I've read recently. Poor Dr. Rex is both a skilled mage and an accomplished doctor, and he has had it with the mishaps people tend to get themselves into…but he's also largely professional and willing to work with his patients to both cure and educate them. Is he annoyed at the slime lady and the carnivorous plant monster men? Absolutely, but that doesn't stop him from doing his best to help while reminding them that monsters are not sex toys. The book (and translation) also get bonus points for using the real words for body parts; both patients and doctor say “vagina” and “penis” and “clitoris” rather than some euphemism, and when a word like “dick” is whipped out, it's more for humor value. At one point in chapter one, there's even a decent diagram of where the bladder sits in relationship to the uterus, a level of science I was quite frankly not expecting here.

Of course, it isn't all good. Whenever gender presentation comes up, the jokes tend to feel a little mean, mostly in the chapter about the buff man who likes to wear bikini armor. (Although it does work out for him in the end, which is nice.) But when Rex stops an incubus from killing a woman by trapping him in the body of a human woman, things feel a little dicey, because the incubus, despite being about to change his body at will, firmly identifies as male and isn't comfortable living in the wrong gender body. I don't love that that's played for a joke, especially since, unlike bikini armor guy, things aren't resolved in this volume. But other issues, such as the orc/elf married couple believing that penetrative sex is the only real form of sex, are presented as their worldview; in fact Dr. Rex tries to talk them out of this idea before suggesting that the elf wife's backside might make a better orifice.

Magic Doctor Rex’s Perverted Medical Record is a trip. It does feel prurient at times, but it also acknowledges female as well as male sexual pleasure, and it tries to make everything make sense in context. I wasn't sure what to expect, but I'm glad I read this weird book – and I might even be back for volume two.

Bolts
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This is the kind of creative adult content that I've been craving lately. Sometimes I think it doesn't take much to come up with a unique spin on things. All you have to do sometimes is take two seemingly unconventional situations or a commonly used conventional scenario and just reframe them in a different light. I've seen plenty of sex stories involving slimes or massive size differences between fantasy species. But framing those situations from the perspective of a disgruntled doctor who is trying to help these people with the broken aftermath of their common porn situations is a treasure trove of comedic potential. That is how I felt reading Magic Doctor Rex, which really makes a lot of those scenarios that I've seen dozens of times before feel really new.

This story has an amazing sense of comedic timing with each chapter, focusing on a different type of scenario. There is some carryover between chapters and some side chapters will even refer back to something that happened in a previous chapter, but almost every chapter has a similar comedic setup. Someone new visits the clinic that Rex works at, Rex is disillusioned by the sheer stupidity of these people doing something crazy in a fantasy setting and he has to come up with a way to fix the problem. Sometimes it's as simple as making it easier to piss out of slime while other times it can be as complicated as surgically reattaching someone's dick that got chopped off.

There is a little bit of crudeness to the comedy, especially since a lot of it seems to have to do with how the body itself is enduring some of those situations, but I like that there is sort of a practical spin put on everything. This isn't a scenario where magic can just fix everyone's problems, there is an order to how everything needs to be solved and I appreciate that creativity. This is not an adult title that was made to feel titillating. Rather, this is an adult book that is meant to be read by people who have read a lot of adult material so they could fully appreciate just how ridiculous some of those scenarios can be if just the slightest thing went wrong. Please give this a read for some good laughs when you have the time.