Hello,
I've found this scan and I'd like to know the manga it is from...
Searching for the artist, no results...
It should be some chapter from an anthology... and looking the breasts size, may be a BE story.
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I received several kindly PMs asking about my avatar, so this is the reply: it?s from "Sexual misadventures of Kung Fu Girl" by Kono Yaro and Suke Bei.
2nd story includes a few breast expansion and nipple erecting caused by a gas called ZED.