Having lost his beloved mother at an early age, Black Yi Ryuusei had spent his childhood in endless study, steeped in the belief that power reigned supreme.
Especially when he watched his father breed one highly venomous Pokémon after another through the brutal practice of raising gu, the darkness already lurking in his heart began to awaken...
At a gathering held by the financial conglomerates, he met boys and girls his own age.
Aloof and cold, Black Yi Ryuusei remembered only the names Steven Stone and Cynthia...
Soon, he received his first Pokémon.
It was a Gastly!
A victor with tremendous potential, one that had emerged from the swarm of gu.
Bloodthirsty, cold, powerful!
Most importantly, this Gastly possessed an unexpectedly powerful innate ability!
Soul Devour!
The grudges, obsessions, and spirits of dead Pokémon, along with Pokémon's negative emotions, could all become nourishment for its growth!
Black Yi Ryuusei smiled in satisfaction!
This was a true "Gu King"!
And the Pokémon best suited to him!
Even at that young age, he developed ambitions for the future!
Until the day he defeated his father head-on and had his Pokémon, now evolved into Haunter, mercilessly devour his father's slain Pokémon,
the previous generation's "Gu King"!
Nidoking!
From that moment on, the Black Yi House Clan would become the vehicle for Black Yi Ryuusei's ambitions, carrying him ever forward!
Seize the poisonous waters!
Control the islands on the fringes of the Pokémon League's territory!
Accumulate funds through illegal trade!
Supply Poison-type Pokémon and materials to the Dark Organization!
Conduct Pokémon experiments!
Turn the islands into breeding grounds for "Gu Kings"...
Step by step, Black Yi Ryuusei's plans steadily progressed.
One day, he learned that Cynthia had become Champion...
One day, he learned that Cynthia was growing ever closer to a lowly commoner...
Even