Premise
The MC died in another world and is reincarnated into a merged DBZ + Harry Potter universe as a Saiyan infant. Instead of Son Goku, he's found and raised by Grandpa Gohan in Mount Paozu.
However, unlike canon Goku, he's aware of magic's existence because he met a young witch early in life — Harriet "Harry" Potter, who was brought to visit by a certain eccentric half-giant after her parents were attacked.
They grow up as pen pals and occasional playmates until their adventures truly begin. Now, after the events of the King Piccolo arc, the MC is training at Kami's Lookout, preparing for threats that could endanger both martial artists and wizards.
Key Story Differences
Fused Timeline
The Dragon Ball timeline and the Wizarding timeline run side-by-side. Hogwarts exists somewhere in Europe, while Kami's Lookout and West City exist elsewhere in the same world.
The Ministry of Magic is aware of ki-users, but classifies them as "Non-Wand Spellcasters" in old magical law records.
MC's Role
Replaces Goku's spot in major Dragon Ball arcs.
More strategic and thoughtful than canon Goku, using knowledge of magic alongside ki in battle.
Maintains a deep bond with fem Harry, acting as her protector and confidant.
Harriet's Life
She's still the "Girl Who Lived," but her confidence and skill grow faster because of her friendship with the MC.
Trains physically alongside magic, developing wand combat and movement techniques inspired by martial arts.