Green Crystal Love in Revenge

They were abandoned by their biological father when they were six years old. In order to avenge their mother, they went to Alcatraz Island for training. Ten years later, they were no longer as weak as they were when they were children. Instead, they became the top three killers and saints. They also founded the largest gang, the Dark Moon Gang and the largest group, the M·E Group. Now they have returned to the place that hurt them ten years ago, just for revenge. What will happen in revenge... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.