I'd prolly upload some one shots as well but not anything that can't already be found elsewhere.
Also, Himatsubushi's been doing the light novel. They've had 2 chapters up so far and a torrent link's on their site. They seem to be faster than Baka-Tsuki, so if you can't take the wait, you know what to do.
QUOTE As a child, Kawagoe Haruma eagerly awaited the birth of his little sister. However, his mother had a miscarriage, followed by an operation that left her unable to bear children. That Christmas, Haruma made his Christmas wish. It was a wish so innocent and heartfelt that it was accepted instantly, unbeknownst to him.Many years later, on Christmas morning, college student Haruma is awoken by a woman riding a hovering motorcycle and claiming to be Santa Claus. She throws him a bag, and he opens it to find his new little sister!
Complaining to Santa Claus that he made this wish a long time ago, she tells him that it takes much longer for a sister than it does a toy car. After naming her Choko because of the Anchoko (mini-guidebook) she carries around, they begin their new life as brother and sister in a crazy apartment building filled with interesting neighbors.
You'll have to download the volume 51 - 59 batch file there in that page which might be annoying but seeing as you can't find any other sites...
Also, it's not yet licensed according to the site so I guess it's okay to post the link.
Are you sure its even scanned that far, since ive just searched best i can and i can only get up to Volume 20. And that release was over 2 years ago so i can only assume that its a dead project unless you can link evidence to the contrary?