Cosine did this? Interesting. o_O
And what the heck is that purple thing. Haha.

Looks like an Ona hole.

It is an onahole. There's more to the image. This is only the right half. On the left is a futanari Ritsu. I don't want to upload it here, but here's the pixiv link.

http://www.pixiv.net/member_illust.php?mode=medium&illust_id=11828519

Futanaritsu is awesome o.o thanks BakaHoushi

To be specific, it's the cover of a doujin called "Futanari!" What, would "Futa-ON!" have been too subtle?

CZero said:
To be specific, it's the cover of a doujin called "Futanari!" What, would "Futa-ON!" have been too subtle?

Oh boy, other futa fans XD -jk-

No, I just looked it up out of morbid curiosity. Futa is not my cup of after-school tea.