"When all colors are layered together, they become white. What I create is a 'White Kingdom' where all races come together."

In the Grape Sea, where different races continue their conflicts, Toto Gattoland, the second prince of the Gattoland Kingdom ruled by the "Meow" tribe with cat ears, encounters Artemisia, a girl sent as a hostage by the antagonistic Black Rose Knights. Initially closed off, Artemisia gradually regains her smile through interactions with Toto and his companions. However, deep-seated discrimination exists between humans and the "Meow", and a cruel fate awaits Toto and Artemisia, who have started to harbor a faint love.

A large army led by knights clad in armor, a fleet of sailboats filling the sea, eight swordsmen with the sacred beads of "Benevolence," "Righteousness," "Propriety," "Wisdom," "Loyalty," "Trust," "Filial Piety," and "Sibling Harmony," mechanical soldiers roaring with the miasma engine, and a flying fleet in the 500-meter limited "Floating Zone."

"Whenever, wherever, even if everyone becomes an enemy, I will be your shield to protect you." The unparalleled classic fantasy chronicle begins.

(Source: Shogakukan, translated)