Both Gyutaro and Daki are upper moon six demons that are loyal to Muzan. Both are 126 years old. Both Gyutaro and Daki are also siblings. Daki was a very prideful, dismissive, and sadistic person, taking enjoyment in toying with her victims. Daki is also very temperamental and childish. Gyutaro is cruel, ruthless, petty, and envious. Daki’s blood demon art is Obi Sash Manipulation. Gyutaro’s blood demon art is Blood Manipulation. Gyutaro uses dual Flesh Sickles as weapon. Daki uses obi sashes.