This is a fanfiction about a mage and a student. The protagonist, Mu Yizhan, is born with both lightning and dark elemental powers, possessing an innate dark nature. He transmigrates to the world of "Full-Time Master" and becomes Mu Nujiao's twin brother. Regarding "Full-Time Master," Mu Yizhan has only briefly read the character introductions and the chapters before the Scaled Demon Mother. Before the disaster in Bo City, Mu Yizhan embarks on his journey to Bo City…