Yuji is a muscular teenager with big light brown eyes and black and pink spiky hair. After eating the finger and consequently becoming a host for Sukuna, he gets a 2nd pair of eyes that only open when Sukuna controls the body.

At the start of the series, Yuji wore a light-colored hooded jacket, high-cuffed black pants, and white shoes.

In the anime, however, the color of his pants were denim, and he wore red shoes.

When Yuji enrolled into the Tokyo Prefectural Jujutsu High School, he began wearing his version of the uniform; a black long sleeve shirt resembling a gakuran over a red hoodie, black pants, and red shoes.

In a "certain battle" he gains a scar between his two eyes. It is unknown if it can be reversed with a reverse technique yet.