Losing My Other Sides Control

Lucy Heartfilia daughter of Layla and Jude Heartfilia. But she is more than that she is also daughter of Mavis and Zeref Vermilion. Those are her true parents. Since she too strong for her little baby body. The parents sealed her powers and sent her to mavis's old friends Jude and Layla, they take care of her blah blah blah. She was secretly training with her actual father Zeref with dark magic. But while she was training she got another personality that takes a lot to control, what if let's say one of her guild mates pissed her off so much she loses control over that side. Oh and did I mention that other side is very bloodthirsty, mean, and ruthless. Find out what happens in LOSING CONTROL OF MY OTHER SIDE.