Trigger has a habit of picking artists with a lot of adult work on their resumes for the anime studio's monthly art. It's October. It's Halloween. So they went for someone who does a lot of work with not-exactly human girls. Slime girls. Sheep girls, and especially horse girls (you might remember their life-sized centaur hug pillow). They're what are in Z-ton's wheelhouse. But, they kept things mostly human for Trigger-chan, Muzzle and Spring.

Z-ton's Twitter / PIXIV - warning - NSFW

A couple of bonus, relatively benign pieces by Z-ton...

And, speaking of Trigger-chan

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Scott Green is editor and reporter for anime and manga at geek entertainment site Ain't It Cool News. Follow him on Twitter at @aicnanime.