Sukuna and Yuji are brothers. Yuji is a 15 year old of average height and appears to have a slender build when wearing baggy clothing, but actually has a lean and muscular physique. He also has large warm brown eyes and spiky pink hair that's styled in an undercut. Sukuna is a taller 21 year old with spiky pink hair that he pushes back and facial tattoos of black lines that continue down his arms and chest. Sukuna has sharp red eyes and looks more intimidating than Yuji and acts hostile