Arimori Tsuchimikado

Arimori Tsuchimikado (土御門 有主) is an exorcist, the son of Arima Tsuchimikado and Mana Tsuchimikado and the grandson of Seikai Tsuchimikado who would join the Enmado House to be acknowledged by his father, but upon Rokuro Enmado defending him from his father, Arimori swore his loyalty to the latter.

Appearance
At first glance, Arimori seems to heavily resemble Arima Tsuchimikado with white colored hair that has blue ends and a mole on his chin.

He is first seen wearing the school uniform of the exorcist school with the house crest in Tsuchimikado Island.

His long eye lashes and soft look is from Mana Tsuchimikado, which makes him looks feminine and being played of by people (for example, giving him women's clothing and claim it's suitable).

Arimori wears shorts regularly and his battle clothing is specially tailored to consist of one.

Personality
Arimori seems to be a bit like a loner as seen when he sits next to a tree by himself before classes. However, he still seems popular among girls and shares his father's love of women as shown when he acknowledged the attractiveness of Mayura Otomi. While he is initially depicted as prideful, arrogant, and spoiled seen through his insulting comments on the Enmado House as well as him forcing Rokuro Enmado to act as a servant.

In his private moments, it is shown is insecure given his lack of power relative to his father at his age. After his mother's death, his relationship with his father deteriorated as the latter buried himself in work while voicing disappointment at his son's progress as an exorcist. As a result, his biggest dream is for his father to at least acknowledge him.

Upon joining Rokuro, the Exorcist his father holds in high regard; Arimori joined him to make his father acknowledge him. Through their interactions, he begins to open a little more and come to respect him. This respect grew when his father came and scolded him for his actions, Arimori broke down being unable to muster a word. However, after Rokuro stood up for him and called him family this left Arimori touched and he swore his allegiance to him.

History
Arimori was born into the Tsuchimikado Clan as the son of the thirty ninth head Exorcist Arima Tsuchimikado and Mana Tsuchimikado. As a young child, he was very close to his parents and sought to be a powerful Exorcist like his father. One day, his mother died and he vowed to be a strong exorcist like his father and aid him in his duties. However, as he trained he struggled with trying to impress his father who became cold in his grief and bluntly asked Arimori if he was really had the talent to be his son causing the latter to break down.

At some point, he skipped elementary and enrolled in the Seiyouin Exorcist Academy.

Plot
When Rokuro Enmado and Mayura Otomi first arrived at the Seiyouin Exorcist Academy in Tsuchimikado Island, he walked past them before being met by people who were claiming that the two were the Twin Stars. When Arimori was asked by a bunch of girls if he noticed the supposed Twin Stars, Arimori seemed like he did not care and said he was so focused on checking out Mayura's large chest that he disregarded Rokuro's presence.

Arimori later officially met Rokuro when the latter bumped into him in their class and called him an elementary school student causing Kinako to slap him on the head and tell him who he was. Rokuro was shocked that Arima had a child while calling him by the nickname that he had given him causing even further distress. Arimori called Rokuro a rude person.

Later on, Arimori arrives at Enmado House to tell Rokuro he is going to reside with him. Arimori tells Rokuro that not only will he live there but he will help him get more members, as well aid in Rokuro's training for the Exorcists games in exchange for him becoming his servant. At first, Rokuro bluntly denies him, to Arimori's shock and when Kinako mentions that Arimori could tell his father this causes the latter to threaten him but Rokuro hits him on the head. Arimori cries as that was the first time someone struck him and while eating candy he promises to make Rokuro pay. At Kinako's urgings, Rokuro makes up for this and gives him royal treatment by acting like a servant. Arimori and Rokuro later talk with the latter asking why he chose the Enmado House to occupy and offers advice but Arimori shrugs this off by stating Rokuro's recent actions such as making his own House. In response, Rokuro tells him that there is a person that has been climbing over the dreams of the people he has ever been involved with and he has to make sure that person does not get in the way of his own dreams. Arimori then remembers his past and his own dream and soon questions the meaning of dreams.

When Arima arrives, he tensely greets his son and berates him for his actions while telling him that he no unique talent. He threatens to banish him from the Tsuchimikado House if he does not return. As Arimori tries to work up the courage to reply, Rokuro steps in and calls Arimori his family since he decided to come to his house. He tells Arima that since he brought up disownment then Arimori can join him to Kinako's shock. After a tough talk between Rokuro and his father, Arimori is barely able to get out one word before his father reminds him that one must have a strong resolve in order to lead the Tsuchimikado House. Afterwards, Arima leaves, Arimori thinks back to his past and how he sought to earn his father's approval by learning various spells to work with his father as an exorcist. Arimori then asks Rokuro if no matter how difficult his dream is will it be achieved causing Rokuro to angrily state he does not know.

However, he does tell Arimori that if he does not act on them then he will never fulfill them. Hearing this, Arimori decides that he must achieve his goals before swearing his loyalty to the Enmado House as Kinako states it was unprecedented for a member of a prestigious family like the Tsuchimikado House to join a newly created house. Kinako then inquires that Arimori joined because Rokuro was the Exorcist his father was interested in and that he thought he could achieve acknowledgment by joining him. Rokuro asks if that is true as Arimori blushes and sweats confirming the answer. Rokuro says he may have to reconsider his decision as Arimori clearly has father issues but the latter denies this.

Much later, they receive new members in the form of Arimori's classmates although they thought they were joining Arimori until he explained his circumstances.

During Rokuro's match, Arimori paid close attention to Rokuro's preparation for his Shikigami. After he released it, he used it to overwhelm Kankuro with Arimori cheering him on as the battle went on.

Powers and Abilities
While seemingly a competent exorcist who mastered several spells and shikigami and being able to skip grades in the exorcist run school, his skills are said to pale in comparison to his father at that age. Consequentially, he constantly dwells in his father's shadow which somewhat limit his abilities.

Shikigami
Arimori is best skilled at Shikigami, since he had few friends and wanted to develop bonds with them.
 * Raika (雷華) and Kokufū (黒楓): Sentient beautiful white unicorn and black horse respectively. They are loyal to Arimori, however, when Arimori summoned them to do housework, they told him that their hooves are not suitable to do so. Arimori can use them to enchant twin blades called Raishin Kagari (雷進華狩) and Kokurin Fūga (黒燐楓牙).
 * Sarutahiko (猿太彦): A huge primate-formed shikigami that can be used as a distractor and meatshield.
 * Unnamed Snake Shikigami: A giant horned-snake with a bell attached to a rope collar, coming out of a gourd. Presumably as transformed, the tip of its tail is a handle that makes Arimori able to use it as a giant whip.

Rokuro Enmado
Arimori first caught a glimpse of Rokuro while walking in the halls of Seiyouin Exorcist Academy. He was too invested at looking at the chest of Mayura Otomi that he neglected paying attention to Rokuro. The two later met formally when Rokuro bumped into him by accident and insult him. He was then shocked to learn from Kinako that Arimori was the son of Arima Tsuchimikado, as Arimori stated to Rokuro that he was the worst kind of person after he insulted his father. Later on, Arimori arrived at Rokuro's home and stated he was going to live there but when will help him get more members as well aid in Rokuro's training for the Exorcists games in exchange for him becoming his servant. Rokuro bluntly denies him to Arimori's shock and when Kinako mentions that Arimori could tell his father this causes the latter to threaten him but Rokuro hits him on the head. Arimori cries as that was the first time someone struck him and while eating candy he promises to make Rokuro pay. Rokuro is forced to make up to Arimori by begrudgingly following the boy's orders over the next few days. However, when Arima showed up and insulted him in order to push Arimori away from him, which make Rokuro defend for him. He later swear loyalty to Rokuro and become his first courtier.

When Kinako hinted that Arimori joined Rokuro to make Arima pay attention to him, Rokuro asks if that is true as Arimori blushes and sweats confirming the answer. Rokuro says he may have to reconsider his decision as Arimori clearly has father issues but the latter denies this. Overall, the two get along fine even developing a brotherly relationship, and Arimori also act as a consultant to Rokuro. Arimori kept his promise of recruiting others and training both which helped him. During Rokuro's fight against Kankuro Mitosaka, Arimori cheered Rokuro on as he overwhelmed and soon defeated the third strongest exorcist. After the match, he cried tears of joy as he hugged Rokuro calling his actions cool.

Sayo Ikaruga
Sayo approached him after seeing he was having a hard time with his occupation. Sayo tried to get him to take a break, since they are the same age. At first, he tried to ignore her because they barely know each other but she insisted that he go in for some to spend time with her and their friends. Arimori ended up having fun and thanked Sayo, who blushed in gratitude.

Etymology

 * The name Arimori means "master, owner" (有主).
 * He has a nickname called "Arisu" for the Kanji of his name.
 * Arimori's surname Tsuchimikado means "soil, earth" (土) (tsuchi), "honorable" (御) (mika) and "gate" (門) (do).