I Became a Magical Girl in the World of Immortality

Blue Star In 2035, immersive virtual games are popular all over the world. The brother and sister took the ultimate magical treasure box and were supposed to become rich overnight, but due to a strange black box, they were both involved in the turbulence of time and space. A misplaced time travel separated the brother and sister. My brother fell into the ancient world of immortality thousands of years ago, accidentally awakened the magical girl's ability, dormant and grew up all the way, and finally took charge of the demon world and became the unrivaled eternal demon king. Thousands of years later, my sister stepped into the demon world as the world's best swordsman, vowing to kill the strongest demon. But when the winner was about to be decided and the true identity was revealed, the two of them spoke in shock at the same time: "Why is it you?"