Respects woman & because of that, he refuses to fight them. He committed crimes, but only in desperation to find medication for his dad. He fell in love with Koyuki, who he nursed back to health. His blood demon art is called 'destructive death' & it's a powerful martial arts power that can also read opponents next attacks/fighting spirit. He became a demon when Muzan headshot him, so therefore he lost all of his human memories. He can regenerate when wounded, except when decapitated.