
Written by Eoghan O'Connell on 25 Nov 2025
Distributor J18 Publishing • Author/Artist Karasuma Yayoi • Price Free
There are several genres when it comes to hentai and/or doujinshi that I’ve got little interest in. In these cases, it’s not that I’m actively repulsed by them but just that the concept of them does little to draw me in. I bring this up because the tag “Ninja” happens to be one of those that have never appealed to me. Still, that does not stop me from encountering these works and, as might be expected from the title, Let’s Go! Kunoichi Otoha, just happens to be a ninja doujin. Since that’s the case, let’s see if it does anything to change my mind about mixing ninjas with hentai doujin.
A kunoichi, the term for a female ninja, named Otoha has finished her training under an elder and has been given her first mission. A problematic high-school student called Saburou Mochizuki has been causing problems by acting aggressively towards his fellow students and Otoha has to deal with him “by any means necessary”.
Of course, being a hentai doujin, we can easily figure out what “by any means necessary” means, seduction being a common kunoichi cliché, although I’ll admit that I struggle to put the pieces together. It’s hardly a spoiler to say that she ends up having sex with him but how this actually deals with the problem of his aggressive behaviour is beyond me. However, it is worth noting that the story is clearly trying to be comedic and it did manage to get one brief moment of amusement out of me when Otoha attempted to use her shadow clone technique, only for her clone to appear completely naked, perhaps a play on how clones in fiction often appear fully clothed. However, this does little to make up for the rest of the story which proceeds to have Saburou participate in a three-way with Otoha and her clone. While played for comedy, it’s worth pointing out that Saburou, despite getting aroused, at no point expresses consent for what’s going on, meaning that Otoha and her clone are assaulting Saburou in the name of her mission. Beyond the obvious moral issues that this entails, I still can’t understand how this, in any way, shape or form, achieves the mission’s objective.

As for the characters themselves, we have quite a bit to unpack. Otoha is energetic and seemingly naive. I don’t believe that she realises what exactly she’s doing although that does not excuse her actions. Saburou is quite a difficult character to pin down. On one hand, he is a genuinely terrible person and, while we learn what his motivations are, they don’t excuse his behaviour. However, I also find it strange that his actions would draw the attention of a ninja organisation. When Otoha is assigned her mission, she’s informed that her group has received numerous complaints from students about his behaviour but how these students contacted them or if it’s merely the organisation overhearing them is left unanswered. The easiest character to analyse is Otoha’s teacher, an old man who is simply referred to as Elder. Elder assigns Otoha the task of dealing with Saburou but we see that his motivation is quite different to how it first appears. As Otoha is doing her thing with Saburou, we see that the Elder has attached a camera to the leg of a bird and is wearing a VR helmet while holding what looks like either a fleshlight or an onahole. Clearly, he’s getting sexual satisfaction from observing Otoha and the ending notes his excitement for her future career.
The artwork varies in quality throughout. There is a lot of detail and style when it comes to backgrounds, movement and shading, which I can appreciate. However, characters can look off at times. In particular, I thought the first clear shot of Otoha looked very strange proportionally. She looks better in some later shots but I still felt mixed on her presentation. It’s also worth mentioning that the rest of the cast don’t look very inspired either. The Elder is quite a stereotypical looking old man and Saburou is also a rather standard looking angry young man. Panels are generally dynamic, a good aspect given the attempted tone of the story. It’s certainly not a bad looking work but there’s just enough issues that I never felt wowed by the presentation.
In the end, Let’s Go! Kunoichi Otoha has done nothing to make me feel more enthused about reading more ninja doujinshi. It’s an attempt to be a humorous read but, save for one moment, it fails to do this and comes off as an unpleasant read which lacks the depth, substance or entertainment that I look for. Perhaps if you switch your brain off, you might get something out of this but that’s too much to ask of any self-respecting consumer.
You can read the title for free on doujin.io.
Going by the online persona Immortallium, I'm a YouTuber as well as a Manga, Anime and Video Game enthusiast.
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