Kunoichi Botan

On a covert mission to infiltrate a merchant's mansion, Yasuzu — a kunoichi, a female ninja — finds herself operating in dangerous territory. Things go sideways fast when she runs into a group of men corrupted by something called the 'Aura of Ogre,' turning them into Demi-Ogres. Outnumbered and overpowered, Yasuzu ends up in a brutal situation, and her thoughts keep drifting to Botan — her senior kunoichi and the person she deeply admires. What she doesn't know is that Botan is already inside the same mansion, using her signature Shadow Clone technique to split into multiple versions of herself to navigate the chaos. This 2-episode ONA from Office No. 8 leans hard into its hentai genre roots while wrapping things in a historical Japanese setting with actual ninja lore — the Kagebunshin technique, the kunoichi hierarchy, the stealth mission setup. It's not pretending to be something it isn't. The mentor-apprentice dynamic between Botan and Yasuzu gives the story a thread beyond pure spectacle, and the feudal atmosphere adds more texture than you'd typically expect. If you've watched Manyuu Hikenchou or dipped into Ninja Girls and wanted something with a similar feudal aesthetic and female ninja focus, this scratches that itch. It's short, it's explicit, and it commits fully to its premise without apology.