Teru is a tall and slim boy, with blond hair (slightly spikier and longer around the base of his neck than his younger brother, Kou's) and blue eyes. He is widely considered to be handsome, leading to his high popularity within the school.

He wears the standard high school division uniform, but with a long-sleeved cream-colored blouse with folded back sleeves instead of the usual short-sleeved blue blouse worn by most of the other male students. Teru also wears a red-and-white Student Council armband on his left arm, like Akane. He sometimes carries a black clipboard with some papers clipped onto it.

Like Kou, Teru carries exorcist tools with him even in school, always wearing a red-and-yellow bracelet (similar to prayer beads) on his right wrist. He also often carries a sword, either in a sheath hanging from his belt on the left side or in a black cloth case on his back.

As an exorcist, he occasionally wears traditional clothing while fighting Supernaturals. When he was younger, he carried the sword sheath with a strap over his left shoulder.

On his days off, he casually wears an unbuttoned shirt with a T-shirt underneath.

SPIRIT BLADE AND LIGHTING: As the eldest son of the Minamoto clan, Teru has been a highly skilled exorcist since he was young. He was capable of single-handedly exorcising a large Supernatural using his sword and spirit lightning even when he was only eight years old (although Tiara is said to have even higher spiritual energy than he does despite her young age).

LIGHTING CAGE: Teru is able to form a lightning cage which can keep Hanako's hakujoudai out. According to Kou, the lightning cage cannot be escaped, although Teru should not be able to manipulate lightning so readily using his sword, since it is a tool specialized for attack.

BRACELET: Teru always wears a bracelet around his right wrist as an exorcist tool, which is able to easily move and change its length with a gesture from Teru. He is most often shown using this bracelet on Akane, through binding and dangling him from the ceiling or restraining Akane to a specific position by putting it in a ring around him. Although it is meant for capturing Supernaturals, Teru has also used it against Kou once, to keep him out of the way while Teru attacked Hanako. However, unlike Akane, Kou was eventually able to break free of the restraints, though Teru seemed greatly surprised at this.

OTHER ABILITIES: Besides for exorcisms, Teru is shown to be capable of other things, such as enchanting glasses for Akane, and spreading salt in the air after Nene opens a jar. He was able to prepare a proper purification with salt water for an infected zombie Mokke, although it escaped before he could purify it. Teru is also physically fit, as seen when he kicks Hanako and knocks the latter off balance, and makes him drop his knife. It allows Teru to attack with the katana, and Kou notes that this is Teru's usual method of exorcising Supernaturals. Teru is also capable of physically dragging Akane away against his will and easily jumping between rooftops across a considerable gap.