Top of the Collapsed World: Starting by Summoning Joyboy

In the Sea Circle Calendar year 1520, on the day of the Paramount War.

Flame clouds carry Onigashima into the skies above the world.

Two years later, the battle of the two emperors at Onigashima in Wano shocks the world.

Two great battles from different points in time converge and merge.

Two years later, Luffy awakens as the Sun God Nika at the Paramount War.

After that, a third battlefield emerges from the past and descends upon the war.

It is the God Valley Incident, thirty-six years ago.

Roger and Rocks crash into the Paramount battlefield.

The world is utterly thrown into chaos!!!

It all begins when someone is summoned from Impel Down and Joy Boy is tricked into becoming a bodyguard...

This novel and its characters are purely fictional. Any resemblance to actual people or events is coincidental. Do not imitate.