Dumbbell Nan Kilo Moteru?

During a regular after-school grub crawl, gluttonous high schooler Hibiki Sakura is confronted about her ever-expanding waistline by her best friend, Ayaka Uehara. With her attempts at solitary exercise failing miserably, Hibiki decides to join the newly opened Silverman Gym. At her orientation, Hibiki runs into student council president and school idol Akemi Souryuuin.

However, it soon turns out that Hibiki is in for a lot more than she bargained for. Not only is Silverman Gym full of world-renowned bodybuilders and athletes, but to make matters worse, Akemi turns out to be a total muscle fetishist! Grossed out by the scene unfolding before her eyes, Hibiki begins to leave, only to be stopped by trainer Naruzou Machio. Completely enthralled with her newfound Prince Charming, Hibiki signs up as a gym member. Now, as a result of her spur-of-the-moment decision, Hibiki must adapt to her new lifestyle.

[Written by MAL Rewrite]

Sakura, Hibiki Main

Fairouz Ai Japanese

Souryuuin, Akemi Main

Amamiya, Sora Japanese

Machio, Naruzou Supporting

Ishikawa, Kaito Japanese

Sekibayashi, Jun Supporting

Inada, Tetsu Japanese

Boyd, Gina Supporting

Touyama, Nao Japanese

Tachibana, Satomi Supporting

Horie, Yui Japanese

Uehara, Ayaka Supporting

Ishigami, Shizuka Japanese

Shortsinator, Barnold Supporting

Genda, Tesshou Japanese

Aina, Rumika Supporting

Tomatsu, Haruka Japanese

Gerson, Kristal Supporting

Uchida, Shuu Japanese

Cook, Justin Producer

Kikushima, Kazufumi Producer

Iizuka, Aya Producer

Ogata, Mitsuhiro Producer

Reviews

Nov 26, 2025

ExoTrillionic

Recommended

A unique anime that is both informative and humorous. It is about bodybuilding and more specifically about a high school girl Hibiki Sakura's journey to lose weight. She loves to eat meat and has been gaining weight recently which motivates her to start going to her local Silverman Gym where she meets a couple of friends, all them being people with their own unique and silly personalities.

Dumbbell is an anime that gives genuinely a good advice about bodybuilding strategies and I can recommend it as the anime to watch for an anime fan trying to lose weight. It's an anime that shouldn't really be watched ... with your family because it does contain quite a lot of fanservice which can get uncomfortable at points.

The anime actually is very very accurate in its bodybuilding advice. The OP is a banger. It's called Onegai Muscle and fun fact it's sung by the same voice actor who played Jolyne in JoJo's Bizarre Adventure Stone Ocean. Jolyne is also the same voice actor for the main character of this anime.

The anime does not have an ending as it continues in the manga. The art style is good and I recommend the English dub. I watched both the English dub and the original Japanese with English subtitles and I have to say that they are both funny but all the jokes in the English dub are translated into the English culture and way of speaking which made it funnier.

One other thing that you should know that might peak your interest to the show is that Arnold Schwarzenegger makes an appearance!

Reviewer’s Rating: 8

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Jul 19, 2022

FrostySmags

Mixed Feelings

Post Series Depression: 0
Tear Factor: 0
Laugh Factor: ~7
Drama Factor: 1
Character Attachment: 6

Story: Very slice of life-ish not really any story line to follow along with. Each episode is kind of like a short informational video on exercises with comedy splashed here and there.

Art: The art is probably one of the best aspects of this anime along with the comedy

... Sound: Sound effects are the most notable part of the anime that going with the comedy gags and whatnot

Characters: Characters are relatively shallow - not really anything interesting about them at all other than the fan service which is I'd say at a moderate level of intensity.

Enjoyment: It was enjoyable for the first half and began going downhill in enjoyment as the episodes became extremely repetitive in their delivery.

Overall: 6/10 - If you're into working out this is very informative, if you're into fan service you might be satisfied? Otherwise the comedy is the only great thing going for it. Wouldn't watch more than once or twice max

Reviewer’s Rating: 6

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Jul 1, 2020

ktulu007

Not Recommended

Funny

Dumbbell Nan Kilo Moteru is an anime from last year. It's a Doga Kobo series based off of a Web Manga. You know, the studio behind New Game & Yuru Yuri. I have yet to review a bad anime from them. So, let's dive in with a little cautious optimism. 


Story:

Sakura Hibiki is worried about her weight and her inability to attract a hunky boy. So, she decides to hit the gym. Little realising that her unattractiveness stems from being dumb as a brick and not her appearance. She tries the newly opened Silverman gym and winds up collaborating with a group of classmates on a light-hearted ... journey to physical fitness. 

There are two fundamental flaws with this series. The first is that it spends a huge amount of time on fitness and nutrition tutorials. You know, the kind of stuff you can learn about much better and more efficiently elsewhere and don't need to watch an anime for. I thought Tsuritama spent too much time with its fishing tutorials but this series easily has twice the tutorials with none of the charm. 

That's the second big problem here. This series is not funny. It tries to be, but its idea of "comedy" is exceptionally stupid. Hibiki tries to hit on a boy, finds out he has a bodybuilder's physique and looks disgusting to her. The girls try to do exercises at home using chairs for support, accidentally break chairs because they weren't sturdy enough. Their teacher cosplays and doesn't want them to know. These are the kinds of jokes you can anticipate. Half the time you only know they're trying to be funny because they use some hideous, exaggerated face one one of the main girls. 

Characters:

I've said in the past that a comedy doesn't need characters who are deep or complex and I fully stand behind that statement. What a comedy does need are characters who have strong interactions and mesh well for comedic moments. The characters in this range from being bland and unfunny to just being a bit obnoxious.

It's like Sandrovich Yabako wanted his characters to be different, noticed that other comedies tried to make characters who were funny and endearing and decided that he was going to go in the opposite direction. Jokes on him, Seth MacFarlane did that first. 

Art:

The character designs are pretty much the standard "cute girls doing cute things" type. But with obnoxious amounts of fan-service and changes to ugly faces as a signal to the audience that it's time to laugh. Because otherwise you would never know which parts you were supposed to find funny. 

On the subject of the fan-service, this anime is downright sleazy with it. Most of the main characters are in their early high school years. And the fact that they frequently mix the fan-service with exercise tutorials makes it seem like Sandrovich specifically made this series to appeal to the types of guys who perv on women at the gym. With some overly muscled dudes thrown in just in case there's someone with a bodybuilder fetish who finds this all tolerable. 

Sound:

The acting isn't bad. Not the best I've heard from Amamiya Sora, Touyama Nao or several others. But it's basically passable performances with occasional bad direction leading to exaggerated delivery. Although, in fairness to the director Yamazaki Mitsue, exaggerated performances are often a hallmark of bad comedies. It's like there's this idea that if the actors just go full ham on their lines, they might get a pity laugh for trying so hard. 

The music is mostly bland. The ending theme tune is really annoying. The opening theme tune is almost decent but ten it throws in the characters shouting the names of exercises and that just sounds terrible. It kind of reminds me of the American cartoon C.O.P.S, where the theme tune had a nice beat but when you throw in all the random "Cops" throughout it just makes you want to hear the tune without lyrics. 

Ho-yay:

There's very little. There's one scene where Gina seems almost interested in her female teacher. Then all the characters go back to chasing that elusive boyfriend who finds them charming and not imbecilic and annoying. 

Areas of Improvement:

1. You don't need tutorials in an anime. Seriously, anyone who wants to learn about strength training and nutrition has much better sources available. All your audience is going to do is get up and get some crisps, kinder eggs or other junk food while there's a lull. Or fapping to the images of under-aged girls exercising because they can't do that at a real gym any more.

2. If complex characters are beyond you, which they clearly are. At least make characters with endearing qualities who can work well for comedy. 

3. If you want to go all in on the fan-service, at least make your main cast grown women. Honestly, there'd have been no real difference if the main cast had been made up of young ladies in University and their teachers. Except that the adults in the fan base wouldn't be under observation by law enforcement. And it would be significantly less skeevy. 

Final Thoughts:

This comedy is pretty bad. It's unfunny, downright obnoxious at times, spends far too much time on boring fitness tutorials and sleazy. That being said, I have seen much worse comedies. I've seen ones with much more annoying characters. I've seen ones with much more wretchedly bad humour, this one is mostly just stupid. And I've seen ones that are much worse with their fan-service. It's still bad, but I'd hesitate to call it terrible. My rating is going to be a 3/10. As for people who might enjoy it, fitness nuts who really want to watch media that tells them how to do the exercises they're already doing might get a kick out of it. Guys who want to gawk at women exercising but either don't want to enter a gym, can't because they got kicked out already or just don't want to act pervy in public will certainly find an outlet here. I can't really suggest it to anyone else. 

Reviewer’s Rating: 3

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