Marlene captured by Morpheus.

A schoolgirl is kidnapped while on an empty bus. She wakes up wearing a maid costume, with her assailants on top of her. Keywords: hentai, doujinshi. Title: [DO-Comics] Nymphomaniac Dassou [女体闇市場]

Very nice bondage cover! There is also an alternate bondage cover too! Inside, a blonde girl gets her soul extracted by some Chinese Dragon. Also a brief bondage scene of Sorayama.

Warning, there is some nudity in this scene, but this is not from a hentai manga. The characters are mostly female, and they all wear really skimpy high tech costumes. In this scene a group of girls get captured while wandering in the woods. They are attack by this girl who uses a whip-like weapon. The assailant girl ...

Contributed by succubi. Includes a brief drugged drink scene.

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Lucky Dale, Girl Detective, was a backup feature in Avon Comics version of Leslie Charter's famous character The Saint. Her adventures always seemed to involve Lucky getting tied up or restrainted..a nice example here, from 1949! Source: Digital Comics Museum

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Cover features a Black Cat bondage scene. On the inside, The Black Cat is knocked out and tied to a tree.

Bobbi Anne Morse, before she became Mockingbird, had a one-issue career as "The Huntress", here getting, ko'd, OTS-carried and roughed up, before winning a tough fight. Marvel changed her super-identity when DC threatened to sue! A great lost classic from the fantastic "Diversions of a Groovy Kind" blog..any fan of ...

In volume 1, Yukino is chloroformed again! The same villain manages to overpower her with his men, and he places a chloroform cloth over her face! The fumes render the heroine unconscious.

Unfortunatly this is it. No followup scene, not even a complete knockout. Sorry

Hime ( in this manga, she is known as "Supergirl" ) gets kidnapped while in a hospital. Her assailant comments that she was able to smell the chloroform, even in a hospital! Not a bad scene.

Uehara Tsubasa, suddenly tries fixing Mochizuki Shizuka's attitude and getting her to cough up some information, by chloroforming her! In the next chapter, we find out that she was just inviting her to a friendly barbecue party.. A decent scene. Source: mangareader.net

some pics about my favorite anime girl : Misato Katsuragi (Evangelion) being hand gagged Source: Gelbooru

The anime visualisation of the manga scene which is more graphic, in detail and overall a great knockouts cene with a nice passout and brilliant and sexy unconscious shots. The scene is pretty funny too. The scene is self-explanatory and the same as in the manga. The kids knock Misaki out, almost take advantage of t...

Keywords: Azumanga Daioh, doujinshi.

From a really depraved manga (seriously, don't ever try to find this, it is truly sick), there are two brief chloro scenes. Source: exhentai.org

Chloroform, ropes and tape gag. Contributed by Ieon

A woman sprays Kakio with a face full of sleeping gas, with a canister she has hidden up her sleeve. Wake up scene from volume 8 included.