Been a while since I recommended a manga. I just finished this, and started about two hours ago (it's just 17 chapters long).
(http://i.imgur.com/PgifGHX.jpg)
(http://i.imgur.com/4bWCrJE.jpg)
Haru no Houtai Shoujo is a short tragic romance and mystery manga about a high school boy with a serious problem.
To quote batoto;
Haru, a fun, lovable, easygoing guy, has a problem: he can't control his ability to produce flames from his hand. With his girlfriend Natsu nearly burnt to death and the locals concerned about a serial arsonist, what will happen to this human torch?
I found it very charming and got emotionally invested quite quickly. If you don't mind a bit of supernatural and like tragedy, mystery and romance, this is for you. It starts out very lovey dovey but gets grim right in the first chapter. As the quote says, the main character Haru almost kills his girlfriend, leaving her permanently scarred and seemingly blind in one eye. Despite this, she still loves him unquestionably.
Read it here! (http://bato.to/read/_/148271/haru-no-houtai-shoujo_ch1_by_psylocke-scans)