This new series begins with the JUMP SQ magazine, and is based on a series of light novels of the same title by Katayama Kentarou (there's three so far). Yamamoto Yamato-sensei also provided the illustrations for the novel.
Kure-nai is about Kurenai Shinkurou, a first-year high school student who also has a job as a freelance "mediator," and lives in a dormitory full of strange people. For some reason, he also appears to be a guardian of a 7-year-old girl named Kuhouin Murasaki. Kurenai hates people who hurt others, because of his own past, and takes on these jobs to help those in need.
There was a one-shot released for Kure-nai a couple of months back in the Summer 2007 issue of Akamaru JUMP. This has been scanned and shared by Asakura here! Thank you! For your convenience, here are download links: Sendspace | Mediafire
Note: A TV anime series based on the novels has also been announced, and will begin next year (2008). Information about the anime can be found at the official site HERE!