Batman's Owl Godfather

"What kind of thing rolls around in an alley with multiple holes in it?"
“The answer is bowling.”
Bruce Wayne, who lost his parents, chose to travel around the world and learn various skills and knowledge before becoming Batman.
Katoom, an owl who calls himself the Demon King, is actually a time traveler bound to Batman.
The owl changed the trajectory of little Bruce's travels around the world.
Traveling around the world means really traveling around the world!
Bruce Wayne will start from the world of American comics, hone himself in the universe, and become a brand new Batman.
Until then, Gotham is vacant.

This book is also known as:
"Bruce Wayne and Hogwarts", "Avengers: Age of Wayne", "Where are the Wonder Bats", "Batman: The Untold Story", "The Demon Hunter of the Bat School", "Warhammer: Bruce's Rebellion", etc.

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