She is one of the main female characters of the Date A Live series and the first Spirit saved by Itsuka Shidou.
Tohka is a girl with very long, dark-purple hair in the same shade as the color of the night. She partially tied back into a ponytail with a ribbon while still letting much of her hair fall to her knees. Her dark purple eyes are described as crystal-like and have a golden tint. Shido remarks that her beauty is to to the extent of almost being violent.
Upon her arrival on Earth, Tohka wore an Astral Dress with a black, cream, and pink color scheme and a set of purple-and-cream plated armor which adorned her shoulders and waist. The dress is open at the back and made up into a black corset (which exposes a part of her cleavage) and a two-layered, knee-length skirt which has a pink-to-white gradient. Her hair is tied back using a butterfly-shaped hair accessory. She also wears a pair of gauntlets which have petal-like cuffs, both sharing the same color scheme as her attire, as well as a pair of armored boots. While using Halvanhelev, her ribbon grows longer and sharper, and her underlying dress of light becomes more ragged.
Upon her admission to Raizen High School, Tohka adopts the female uniform of said school. This apparel consists of a black, long-sleeved top (winter version), or a white, short-sleeved top (summer version), together with a blue skirt, and a pair of long, black stockings that reach up to half of her thigh.
