From Mangafox: http://www.mangafox.com/manga/iris_zero/
In a world where every boy and girl has a special power called Iris, Toru who, as a result of not having any kind of special power, was bullied from a young age, lives by his motto: “low exposure” – to live without standing out. But his peaceful school life changes when he receives a certain "Confession" from the schools most popular girl, Koyuki. His motto begins to shake!!
The school fantasy story that shakes the heart begins with their meeting.
Genre(s): Mystery, Romance, School Life, Seinen, Supernatural
This is one of the mystery-supernatural-detective(?) type of manga (you can see by it's genre xD). There isn't any fighting, but the manga is very interesting and the concept of the main character being special by being normal, is very inquiring. I said normal, well he may not have any special powers, be athletic, even his IQ is probably normal or a little above, but his EQ is way over the charts and that is his most impresive trait, that allows him to survive in the world full of people with Iris power.