Shinji has brown eyes and jaw-length blonde hair with a straight cut and many of his facial expressions reveal his upper teeth.

He wore the standard Shinigami shihakushō with a standard, long-sleeved, captain's haori, he has a white robe between his haori and uniform, and a cravat that is tucked under his new robe and is clasped using a small, silver slide.

Shinji's Zanpakutō is Sakanade the pommel becomes a large ring that allows Sakanade to rotate around his hand, blade is straight and slim.