Ultraman: Be Rising Mebius!

[Slower pace + more entertainment-oriented + no female lead + growth-oriented + not invincible]

He traveled through the Land of Light's universe and became the young warrior Mebius.

With his unlimited learning ability unlocked, he no longer had to worry about being banned. Coupled with his innate talent for limitless possibilities, he could learn powerful skills with just a glance.

What? Zero has Ultimate Glow? Check out Infinite Phoenix.

And so, he kept moving through each of Oo's stories, learning skills while subtly changing the world's storyline.

Reunion is his dream and his goal.

(P.S.: This book has significantly altered the timeline and world-building. If you value the Ottoman setting, please proceed with caution.)

(It includes Ultraman Tiga's storyline, but it won't take up a large portion of the story.)