Teru is a calm, collected, and reliable individual, earning him widespread admiration from his peers. He is highly perceptive, with a sharp ability to identify supernatural disturbances and recognize their nature with ease. As the Student Council President, he maintains an air of composure and authority, making him a respected figure at Kamome Academy.

In the first chapter, Nene describes Teru as handsome, intelligent, and kind to everyone, likening him to the prince of the school. Despite his near-celebrity status among students, Teru does not appear to be conceited about his reputation. When Nene praises him, he simply thanks her and apologizes for startling her, showing humility despite the admiration he receives. His presence is often compared to that of a television star or idol, as merely seeing him is enough to brighten people’s moods. His charming and considerate nature makes him popular with both male and female students alike.

Teru is especially kind and affectionate toward his younger siblings, Kou and Tiara, frequently indulging their requests and ensuring their well-being. His status as one of the most admired students in Kamome Academy is reinforced by Nene’s comparison of him and Aoi, calling them the “king and queen of popularity.”

However, despite his seemingly benevolent and charismatic personality, Teru has a harsher, sadistic side that emerges in certain situations. He is particularly strict and unforgiving toward Aoi Akane, the Vice President of the Student Council, often punishing him harshly whenever he makes a mistake.

Teru holds a firm belief that all supernatural beings are inherently malevolent and should be exorcised without exception. He views them as threats to human life and does not hesitate to eliminate them. However, there are a few exceptions to his rigid stance such as the Mokke, whom he tolerates solely because Tiara adores them. His exorcism techniques rely on rendering his opponents completely helpless before proceeding with the purification process, which some perceive as unnecessarily cruel.

Although Teru maintains a stoic and composed exterior, it is hinted that he harbors romantic feelings for an unknown individual, though this aspect of his personal life remains largely unexplored.

Teru is a tall and slim young man with blond hair that is slightly spikier and longer around the base of his neck compared to his younger brother, Kou Minamoto. He has striking blue eyes and is widely considered to be handsome, contributing to his high popularity within Kamome Academy.

He wears the standard high school uniform, though with a long-sleeved cream-colored blouse that has folded-back sleeves, rather than the short-sleeved blue blouse worn by most male students. Like Akane, he sports the red-and-white Student Council armband on his left arm. He is often seen carrying a black clipboard with papers clipped onto it, emphasizing his role as Student Council President.

As a member of the Minamoto Clan, Teru always carries exorcist tools, even while at school. He wears a red-and-yellow bracelet on his right wrist, similar to prayer beads, and frequently carries a sword. The sword is typically stored either in a sheath hanging from his belt on his left side or in a black cloth case on his back.

During exorcisms, he sometimes dons traditional exorcist attire, distinguishing his supernatural combat appearance from his everyday school uniform. As a child, he was often seen carrying his sword sheath over his left shoulder, secured by a strap.

On his days off, Teru adopts a more casual look, usually wearing an unbuttoned shirt over a T-shirt, presenting a more relaxed demeanor outside of his responsibilities as an exorcist and Student Council President.

As a member of the prestigious Minamoto Clan, Teru was raised to become an exorcist from a young age, undergoing intense training to master the family’s spiritual techniques. His upbringing instilled in him a strong sense of duty, shaping his belief that Supernaturals must be controlled or eradicated to maintain order.

By the time he reached high school, Teru had already gained a fearsome reputation as one of the strongest exorcists in his clan, earning respect from fellow exorcists and fear from Supernaturals. He became Kamome Academy’s Student Council President, using his position to monitor supernatural activity and prevent harmful spirits from causing chaos.

His reputation as an elite exorcist sets him apart as one of the few individuals capable of challenging powerful supernatural beings, including Hanako and the Seven Mysteries. However, his rigid perspective on exorcism puts him at odds with those who believe in coexistence between humans and spirits, particularly his younger brother Kou.

As the eldest son of the Minamoto Clan, Teru has been a highly skilled exorcist from a young age. At only eight years old, he was capable of single-handedly exorcising a powerful supernatural using his katana and spirit lightning. Despite his immense spiritual strength, it is noted that Tiara, his younger sister, possesses even greater spiritual energy than he does.

Teru’s primary weapon is a long katana, which he wields with formidable skill. Unlike his younger siblings, Kou and Tiara, who generate white lightning, Teru produces black spirit lightning, which is significantly more potent. His lightning attacks are powerful enough to severely injure Hanako, even knocking him unconscious. When used in battle, his lightning directly damages an opponent’s soul from within upon stabbing them. Additionally, Teru’s lightning can travel over long distances, as demonstrated when he electrocuted Hanako from behind and eliminated multiple zombies from an adjacent rooftop. However, it remains unclear whether his lightning would be effective against Hanako while the latter is wearing his cape, since Kou’s white lightning is ineffective under those circumstances.

Teru can conjure a lightning cage, which serves as a barrier capable of preventing Hanako’s hakujoudai from escaping. According to Kou, this barrier is inescapable. However, it is noted that Teru’s sword is primarily an offensive weapon, and his ability to manipulate lightning in such a manner is considered unusual for an exorcist of his kind.

Teru wears a bracelet on his right wrist, which serves as an exorcist tool capable of changing its length and movement at will with a simple gesture. He frequently uses this bracelet to restrain Akane, often suspending him from ceilings or binding him in place. Although the bracelet is designed for capturing supernatural entities, Teru has also used it on Kou, preventing him from interfering in his battle against Hanako. However, unlike Akane, Kou was eventually able to break free, much to Teru’s surprise.

In addition to exorcisms, Teru has demonstrated various supernatural-related skills. He was able to enchant glasses for Akane, preventing him from seeing supernaturals, and successfully prepared a purification ritual using salt water to cleanse an infected zombie Mokke, though it escaped before he could complete the process. He is also capable of spreading salt into the air, as seen when he responded swiftly after Nene accidentally opened a sealed jar.

Teru is also physically adept, as demonstrated when he kicked Hanako, knocking him off balance and causing him to drop his knife. His combat style typically involves a combination of swordplay and exorcist techniques, a method Kou describes as Teru’s standard approach when dealing with supernatural threats. He possesses impressive athleticism, as he has been seen dragging Akane away effortlessly against his will and leaping across rooftops with ease, covering considerable gaps between buildings.

Minamoto Teru is one of the most formidable characters in Toilet-Bound Hanako-kun, representing the conflict between tradition and change when dealing with the supernatural. His unyielding belief in eradicating spirits puts him in constant conflict with Kou, Hanako, and Nene, yet his protective nature and dedication to his family make him a complex and layered character.

As the story unfolds, Teru’s character arc presents an opportunity for growth, questioning whether his strict ideals are truly just or if he should reconsider his stance on spirits. His influence over Kou, his rivalry with Hanako, and his role as an exorcist make him one of the most compelling forces in the series.