Rei Sakuma, a mysterious nobleman, exudes the aura of an immortal vampire. Intelligent and poetic, he guides lost souls while battling loneliness. His aristocratic family, the reclusive Sakuma clan, embraces a vampiric legacy, refusing to cure their hereditary illness. Rei sought a remedy for his frail brother Ritsu but was forbidden. Feared yet admired, he haunts grand salons, presides over occult rituals, and dwells in solitude, lost in philosophy. 