RAW: https://e-hentai.org/s/943783ded4/208816-255

Always found it amusing when they draw one tit going forward and the other tit going backward.
The law of inertia states that should be going the same way, because they're two almost identically massed objects attached to one base being influenced by the same inertia from the same direction at the same time. Thus they should either both be going forward or both be going backward, depending on what stroke of thrust they are currently being influenced by.

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>Warabino Matsuri wincest

Hell yes. Thanks for the upload. I always love how his works are all in full color.

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Anyone else get distracted by NotSwordfish's comment and lose his boner?
@Cynabal If all of us could be turned on sexually by physics, we'd be on Mars by now...

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@gotee: Nah, that just made my penis harder.

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Hmm I just read the tags and saw color and incest and it was good.

Base +6, Lostalgia +6, oneiwonder +7, Konola +7

The breasts of damn near every single woman in the hentai land are their own interactive objects, with their own flavor texts and conversation trees attached — usually leading to your guy grabbing those breasts (without permission and without protests)!

it's not about physics it's GAINAXING
http://tvtropes.org/pmwiki/pmwiki.php/Main/Gainaxing

Base +19, dankestdungeon +3, Wuffz -8, oneiwonder +7, TheOneWhoScans +5, Bulopu +16, Konola +7

@NotSwordfish: they also animate it that way sometimes

Base +6, oneiwonder +7, Konola +7

Should you really question the physics of a medium where rape is a highly successful form of courtship?

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How can semen destroy that gaming rig?

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I'm not sure if incest tag qualifies. The -nee doesn't automatically imply bloodship and can be used for just referring to older girls whom you are close to (Ie: childhood friend, older girlfriend, etc.). I mean in the panels she mentions she's his girlfriend so I think the nee might not be referring to siblingship here...

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@Fate Averruncus

I agree, doesn't seem like incest.

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@NotSowrdfish Not necessarily. Body rotation movement can cause that, like arching to one side. Of course, effects tend to be exaggerated (any kind of bouncing) by most artists that also exaggerate boob size.

Base +7, UWin +11, Konola +7