Do you have an anime that you’d defend with your life despite everyone thinking it’s an abomination? I do. There’s a show I hold dear that people seem to dislike because it’s all PLOT and no plot. That show is Isekai Onsen Paradise, a three-minute short form by Wolfsbane and BloomZ about onsens and oppai. That’s it.
Meitou “Isekai no Yu” Kaitakuki: Arafoo 40 Onsen Mania no Tensei Saki wa, Nonbiri Onsen Tengoku deshita‘s entire existence is about onsen and oppai.
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I constantly hear people calling this show a “waste of time.” But Kashou has impeccable taste, so I’m not mistaken about the beauty in this anime; everyone else is. Let me tell you why: the world sucks. Every day, there’s another “once-in-a-lifetime” catastrophe on the horizon. Ten years ago, my local bakery sold baguettes for ¢50. Now I have to pay $8. Once, they sold me a piece of bread so soggy that it depressed me to the point of suicide.
Everything about life keeps you in a hyper-vigilant state where you have to worry about disease, inflation, soggy baguettes, and the government taking our porn. So, anything that unplugs my brain and lets me enjoy something without a thought in my head is a godsend. Isekai Onsen Paradise is that kind of show. It empties the mind of all worries and fills it with thoughts of hot springs, oppai, and deep introspection about how I can wiggle into a fox spirit like I’m a tapeworm.
Isekai Onsen Paradise Synopsis
Kouzou Yukawa is a man of focus, commitment, and sheer will, but only when it comes to onsens. Kouzou-kun loves onsens so much that he’s always searching for new ones. That hobby was the death of him. One day, while looking for an onsen, he fell from a cliff and gave up the ghost. (Substitute onsen for jungle tarpon, and that’s the way I’m going to go). Luckily for Kou-kun, he died by a mountain shrine, and much like dying in a church, that instantly welcomes you to paradise. In Kouzou’s case, the shrine’s deity, Inari, reincarnates him into a fantasy world and sends a kawaii fox-spirit messenger named Mayudama to accompany him.
What does Kouzou do when he finds himself in a new world with a sexy fox-spirit/princess? He gets in an onsen, tells her to strip, and demands she join him. That’s a demand he makes of every other bishoujo that comes his way, from elves to nobility. Kou-kun will get his isekai onsen paradise by any means necessary.






LET’S GET NAKED!!! (Well, Actually, Let’s Talk About Production)
Isekai Onsen Paradise doesn’t have much to it. It’s a short show with a shorter plot. But how I looked forward to it back when Anime Onegai used to stream it. With three minutes of content and a tagline of “Let’s get naked!” you know what you’re getting into. If you’ve seen one episode, you’ve seen all. This anime is an onsen info-podcast filmed in a hot spring disguised as a show. It teaches you about hot springs. All knowledge is useful, but not all knowledge is useful to you. Either way, I’d be a happy soul if I could spend every day I have left looking at Mayudama, soaking in an onsen.
Wolfsbane (Banished From The Hero’s Party) and Studio BloomZ (Makina-san a Love Bot?!) co-worked on Isekai Onsen Paradise’s animation. To sum up, that animation is average. But I doubt this anime had a decent animation budget.
Ascendent Animation gave Isekai Onsen Paradise an English dub. I have nothing good to say about it. I’m not a sub purist. I really enjoy Spanish dubs because there’s as much passion in those as there is in the original Japanese versions. On the other hand, English dubs usually fail to capture that magic, and what Ascendent did with this anime falls in that category. No one speaks the way English VAs speak. It always sounds like a caricature of what English is supposed to sound like.






Should You Watch Isekai Onsen Paradise?
I’m plugging this show to J-List followers, the most cultured of all anime fans … so, yeah. I know many of our readers will enjoy what’s an oppai-filled slice of life. There are shows you watch for the plot, and ones you watch to relax. You watch Isekai Onsen Paradise to relax, and to me, the value of both is equal.

Isekai Onsen Paradise adapts the light novel by Konao Menrui and Yoshitake. Its first release was on the user-generated Novel Up Plus website in September 2019. Hobby Japan acquired the LN and began publishing through their HJ imprint in August 2021. OceanVeil streams the subbed and dubbed versions of the anime.
©Konao Menrui/ Hobby Japan / “Isekai no Yu” Production Committee
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