Ao no Exorcist
A troublemaker with seemingly extraordinary physical abilities named Okumura Rin finds the source of his unusual gifts. He and his twin, Okumura Yukio are the spawn of Satan and a human woman. This discovery came at a price when Satan possessed their foster father, Shiro Fujimoto, a priest, exorcist, and to Rin's surprise a paladin. Shiro's death made him decide to train as an exorcist to defeat Satan. His twin already knew about their parentage and this caused a misunderstanding between the brothers. Nonetheless they both have the same goal in mind: to protect the people they care about, and decided to work together. Rin and Yukio The pace accelerates near the end of the story and the mystery behind their parents, how they were conceived and why thy ended up in the care of a priest were explained. The supporting cast helped in Rin's training and the refining of his character as well. His short temper and recklessness was complemented by Ryuji Suguro's and S...