The Ultimate Magical Skill of Traveling Through Time and Becoming the Protagonist of the Game

A man entered the game world by mistake. He kept rising from level 1 to level 100. He took his little brother and fought his way out! As his strength increased, he learned that if he wanted to return to the real world, he must practice the "Peerless Magic Skill" and reach the full level: 1000 to return to the real world!