Criminal's transmigration

Neo-tokyo's most wanted crime lord Leon "Blackfang" mercer, he rules everything. The most brutal and dangerous person was beaten by his own most trusted people and was stabbed as he was trying to understand what his enemy stabbed him to but that was not enough to take him down. He beat all of them, able to escape death. He reached the hospital and as he tried to crossover the road, a high school girl ran pass him. Se didn't pay attention to the road. A truck was coming her way but leon saved her, pushing her out of the truck's way, but he could not save himself as he was taking his last breaths his life reeled befor his life; he has committed many sins He was with many people but was always alone. the last face saw before died was some one he really wanted to protect but his wrong doings didn't spare that persons life leons last wish is that if there is a second life, i want to live a normal life and he died..... but it is not the end of the story it's the new begnning.