Fantasma Del Cielo

Both Sawada Tsunayoshi and his sister Setsuna have secrets. Tsuna having inherited the crown to the strongest Mafia in the world keeps his younger twin in the dark for her own safety. While his sister, simply dubbed a freak who talks to herself, protects the living from the dead as a Medium. Too bad they're both magnets for trouble, and secrets kept from family never seem to last.