Takahashi Shin, the guy who did the comic saishu heiki kanojo has a new comic out.

kimi no kakera (pieces of you)

looks like a great rollicking adventure. I have the first volume and boy does it go FAST.

It's about some princess chick Ikoro with a mysterious past (of course) being raised in the deep snowy wilderness near some girls' school where she is furiously learning a lot. A boy in chains happens to fall through the roof of her place and is unconscious. A moment later, some baddies break into the house looking for something. Ikoro the princess chick says she has it. The mysterious boy wakes up, has no memory, but asks everybody if they are friend or foe. Ikoro says FRIEND. Even though the boy has no memory, he seems to have been psychologically and physically programmed to be a great warrior and will do anything to defend his FRIENDS and defeat his FOES. Ikoro and the boy with no memory (Ikoro dubbed him Shiro because his hair is white) manage to escape the house but are now out in the snowy wilderness.
And so the story begins.

in related context, it seems that there are haibane renmei doujinshi scans which were translated to english and floating around the internet. I do hope that these comics will be published in the u.s. so people can get them more easily than trying to find the limited edition japanese doujinshi but if they don't, this is your best bet for seeing the wonderful artwork and story of haibane renmei, a little bit different from the anime.