悪魔王子と操り人形

── This is the story of a prince who became a devil ──
Beloved as family to the king, an incident awakened the devil within Dia,
and his once-precious country has fallen to ruin.
Long in solitude, he survives by devouring the souls of humankind,
served by his compatriots, Espada and Fiori.

There, imprisoned within this trio's castle, so to begins your story...