Bokura wa Jinsei de Ikkai dake Maho ga Tsukaeru

In a small village far from the city, when the boys living here turned 18, they were told: "Men in this village can use magic once in their lives" - But they only have two years until they turn 20 to use it once. What the previous generations used it for, the boys could not know until they used magic themselves... And so, Akito and his classmates began the journey to find their using magic purpose. (Source: Japanese = natalie.mu || Translation = MyDramaList)