Ebisu initially presents himself as a kind and considerate individual, always eager to lend a hand and support those around him. This facade allows him to get along with others, including Haruaki, though his warmth is sometimes interspersed with moments of cold detachment, hinting at deeper complexities in his character.

Beneath his polite exterior, Ebisu harbors a profound disdain for youkai, driven by his protective instincts toward his brother, Sano. He despises the idea of Sano attending Hyakki Academy, believing it to be an unsuitable environment for his sibling. His presence at the school is fueled by an ulterior motive: to convince Sano to leave and sever ties with the youkai world. Sano reveals during the School Festival Arc that Ebisu has grown distant from his former self, even expressing apathy toward humanity as a whole, showcasing how his bitterness and convictions have warped his worldview over time.

Ebisu has long, dark brown hair tied into a braid that extends down his back, giving him an elegant and refined appearance. His red eyes, accented with blue irises, make him stand out and give him an enigmatic aura. He is usually seen wearing a white, striped button-up shirt paired with dark pants, presenting himself in a neat and professional manner. Ebisu’s ever-present smile adds to his charm, and many of the female students at Hyakki Academy admire him for his good looks.

Isaburou’s primary role is to assist Haruaki in managing Class 2-3, providing both practical and emotional support. His composed nature complements Haruaki’s anxious personality, allowing the two to work together effectively. Isaburou often steps in to mediate conflicts or offer guidance, ensuring the class remains functional even during supernatural mishaps.

Isaburou serves as a mentor to the students of Class 2-3, helping them navigate their academic and personal challenges. His firm but empathetic approach makes him a trusted figure within the classroom, especially for students struggling to balance their supernatural identities with their responsibilities.

When unexpected events disrupt the academy, Isaburou often takes a leading role in resolving the situation, using his knowledge and quick thinking to protect both the students and the faculty.

Ebisu possesses an innate ability to radiate an aura of good luck to those around him, provided he allows it. This luck manifests in remarkable ways, as seen during their time on the train when he made an impressive jump to land on the front of the train, despite being unable to see it clearly. Another instance occurred during the Kyoto School Trip Arc, where Nyuudou sought his help. While traveling by taxi with Nyuudou to reunite with Haruaki, Sano, and the gods, the journey was remarkably smooth—every traffic light turned green, the driver didn’t question Nyuudou’s unusual appearance, and there was minimal small talk, showcasing the powerful effects of Ebisu’s luck aura.

Interestingly, Ebisu appears to have control over his ability, as demonstrated during Sano’s test run of a game for the culture festival. In this instance, he deliberately refrained from using his luck to prevent Haruaki from finding Tama and Mame, indicating that he can activate or suppress his luck aura at will.

Sano Mikoto
Sano is Ebisu’s younger brother, though this fact is not publicly disclosed when Ebisu starts working at Hyakki Academy. The two haven’t seen each other in three years, and they do not share the same last name, with Ebisu offering no explanation for the discrepancy. Ebisu’s primary reason for working at the school seems to be keeping an eye on Sano, likely to find justification for removing him from the school entirely and severing his connections with the students. Sano dislikes Ebisu and hints that his brother underwent a significant change in personality during their time apart, as evidenced by their tense interactions during the youkai train trip. Despite this animosity, Ebisu harbors a subtle brotherly affection, internally admitting that he finds Sano endearing when he gets flustered.

Haruaki Abe
Ebisu and Haruaki initially got along well, with Ebisu offering help to Haruaki when he was separated from his class during a school trip. However, their relationship soured when Ebisu witnessed Haruaki risking his life to save a Zashiki-warashi trapped in a burning mall. Ebisu also seems to enjoy overshadowing Haruaki, often stealing the spotlight from him and his students during school activities. Their relationship is marked by tension: while Haruaki wishes to connect with Ebisu, he remains cautious of his true intentions, and Ebisu keeps Haruaki at arm’s length, reluctant to grow closer.

Miki Rintarou
Miki is highly suspicious of Ebisu and doesn’t trust him from the moment he starts working at the school. When alone with Ebisu, Miki wastes no time questioning his motives for becoming a teacher’s assistant. Ebisu deflects Miki’s suspicions by mocking him, specifically mentioning the loss of Miki’s powers due to his mother siphoning them. Despite their animosity, the two form an uneasy truce, as both have someone at the school they are determined to protect.

Hatanaka Izuna
Though their interactions are limited, a sketch by Mai Tanaka suggests that Ebisu and Hatanaka have a surprisingly cordial relationship. Ebisu often sits beside Hatanaka during meals with the other teachers, using him as a convenient dining partner by passing foods he dislikes to Hatanaka, who willingly eats them. This mutual understanding suggests a level of casual camaraderie between the two, despite Hatanaka being a youkai.

Ebisu Isaburou plays a vital role in A Terrified Teacher at Ghoul School, embodying themes of mentorship, balance, and professionalism in a world filled with chaos and mischief. His interactions with Haruaki Abe and the students of Class 2-3 highlight the importance of teamwork and understanding, making him a memorable and indispensable part of the series.