Ultraman: I'm Already Invincible, Why Do I Need Disciples?

[Ultraman + invincible hero + taking disciples + one heroine + Galaxy, who embodies both light and darkness, and Dark Lugiel] [Warning: This is an Ultraman disciple-taking story. Some timelines and Ultraman lore have been slightly altered. Readers who mind should not read!] “Master, what’s the point of getting stronger?” Little Zeta fiddled with the Z Riser his master had given him. Zeta was still young, only about three thousand years old. His master had brought him home from a corner of the universe. According to his master, in the future he had nearly been killed by aliens. His master had also brought him to a universe from a very, very long time ago. It was because his master had appeared that he had survived to this day. Just as little Zeta asked the question, his master, Ya Chen, who was sitting in a chair enjoying the spring breeze, slowly opened his bright eyes. Looking at the one he loved, he said softly, “Little one, once you grow up, you’ll understand.” Ya Chen looked at Ruoxi, who was studying a cookbook, and smiled warmly. Little Zeta followed Ya Chen’s gaze and looked at his master’s wife. “Oh~ Master, you’re openly staring at Master’s wife. I caught you~ Hehe.” Ya Chen turned his gaze to little Zeta. A playful smile spread across his face. “Ah!” “Ding! The Host’s disciple, Zero, is being corrupted by Belial. Host, go help your disciple escape!” “Mission reward: One million Plasma Flame Blades (one hundred times more powerful than an ordinary Plasma Spark Blade!)” “I can’t believe Zero learned the Giga Burst Beam and still couldn’t beat Belial. What a useless brat.”