Amazon has put up a product page for the first volume of the Danganronpa manga, revealing some info. If you are interested, you can order the first chapter of the series with this link from the shopping website. You can find the cover underneath this paragraph.
The manga is based on the DanganRonpa: Trigger Happy Havoc videogame where Makoto Naegi and a group of other students from Hope’s Peak Academy are trapped inside the school. The only option to escape is to murder someone and get away with it.
Dark Horse is the publisher of Danganronpa Manga Volume 1, which has an ISBN-10 of 1616559284 and ISBN-13 of 978-1616559281.
A new entry of the gaming series, Danganronpa Another Episode: Ultra Despair Girls, recently came out for the PlayStation Vita in North America. The third mainline installment, which has the Japanese title of New Danganronpa V3: Minna no Koroshiai Shingakki, was just announced at TGS 2015 for the PlayStation 4 and Vita as well. So, along with the manga release, it looks like the franchise is growing in popularity.