There was an uncropped/uncensored ver. of this posted @ seiga #2556166 but it managed to get taken down a few seconds before I could post it..

Does the artist usually post in multiple places? I found the sketch here on Twitpic, http://twitpic.com/b19wcs and I really hope to see it colored.

Going by a quick google-translate of the commentary, it looks like they'll post the full-size ver. on pixiv nearer comiket.

Seiga Commentary: C83用。多分表紙(´・∀・`)
普通に春画に上げたら瞬殺されたのでトリミング＆TKB修正。
加工無しの画像は、コミケの気配が近づいてきた頃にpixivに上げようと思います。

ところで皆さんはこの中だと誰が好みなんです？