Tatsuya has brown hair worn long with a center part, brown eyes, and lightly tanned skin.

He wears the male-variant Seven Sisters uniform, consisting of a black blazer and black pants with contrast trim worn over a white button-down shirt, and black sneakers. 

Additionally he wears a blue tie, indicating his status as a third-year student. A black wristwatch can be seen on his left arm and his belt buckle has a distinctive leonine design.

He's 5'11" (181 cm) in height. 