All the relationships of Chifuyu Orimura.
Morioka Creators[]
A group of people responsible for her, Ichika, and Madoka's creations. The relationship between her and them is unknown, but after she learns their intention with Ichika, she abandons them and everything they promised her while fleeing with him. She also never told Ichika about them, knowing he would never understand.
Family[]
Ichika Orimura[]

Young Chifuyu and Ichika
Ichika is Chifuyu's younger brother who she looked after. When he was created, Chifuyu came to care for him as a brother and protected him after learning that the Morioka Creators intended to have him killed. Thus, she escaped with him and kept him from the horrors of their origin, and she lied by saying they were abandoned by their parents. She has since raised him by herself.
Although Chifuyu is tough most of the time towards her brother due to her personality and professionalism, (especially in school) she deeply loves and cares for Ichika as she sees him as her only family, which is best seen when she abandons her match to save him. When she's at home, she acts far more casual to him than she does at school. Chifuyu was also the one who enrolled Ichika in the IS Academy to keep him safe from other countries and corporations that wanted to recruit/scout him. To help her relax, he also massaged her back every day. Chifuyu herself admits to Maya that she would feel troubled if Ichika gets a girlfriend, despite supporting him to have one. Her statement, made after downing a few beers, of not handing Ichika over to any of them and for the five girls to 'get to her level' has been interpreted as 'unofficially' declaring herself a rival. Strangely, she often told Ichika he should get himself a girlfriend and would question him about why he doesn't enjoy doing the things most guys would (such as doing the IS Academy physical). While she admits she doesn't understand why, Chifuyu is aware that girls tend to fall for her younger brother, even though he doesn't try. She can also be smug from time to time, such as when Ichika served drinks, he got hers first, much to the other girls' displeasure.
The other girls have thought that they look more like a married couple than siblings at home, something Chifuyu notices too. She enjoys Ichika's cooking and getting massages from him, even admitting he would make a good boyfriend. She would sometimes ask for his opinion on which clothes she should buy, including which bikini she was going to wear at the beach.

Chifuyu being a princess carried by Ichika
Also, Chifuyu is shown to worry for her brother a lot, such as when he fought Madoka and after he was fatally stabbed by her. When Yamada informs her of them having lost any signal or contact with Byakushiki, she is heavily shocked. In addition, when he was captured during the 2nd Mondo Grosso, she went out on her way to save her brother, forfeiting the match in the process. This shows that she treasures her brother and values him more than anything. Ichika's importance to her is further shown after he was killed by the Excalibur; she was both extremely saddened by his death and full of murderous rage towards Tabane, who was the cause of the Excalibur going out of control in the first place. Tabane noticed that his death broke Chifuyu, thus she tried to focus on the mission to avoid any more of her students dying. She was just as relieved as everyone else when he was revived[1]. Chifuyu was devastated once again after Madoka stabbed Ichika right in front of her, swearing she would kill Madoka and Tabane for it[2].
Nonetheless, she does keep a lot of secrets from him. However, she mostly does this out of love for her brother and concern for his feelings. This was the reason why she didn't tell him about what they really were or the details about why they were created, as she knew he wouldn't want to know. Instead, she lied to him about them being abandoned by their parents, even though they never had any parents to begin with, as they were experiments that ultimately hurt him even more after discovering this[3].
Madoka Orimura[]
Madoka is the younger sister of Chifuyu and Ichika's twin sister. The relationship between the two is unknown, but she becomes aware that Madoka is working for Phantom Task by volume 11. However, Tabane revealed that even Chifuyu was unaware of Madoka's existence when she decided to raise Ichika by herself.
It is later revealed Madoka is not biologically her sister but really her clone, created to replace her. Feeling as if she had been abandoned by Chifuyu, Madoka wished to get revenge against her "older sister". Chifuyu was quite shocked to be faced by her, as the latter confronted her.
At the same time, Madoka also wanted Chifuyu to finally pay attention to her. To that end, Madoka decided to kill Ichika first as the best way to make her suffer, which worked.[4] After this, Chifuyu became hell-bent on killing her "little sister" and Tabane for fatally injuring her beloved little brother.
Colleagues/Friends[]
Maya Yamada[]

Chifuyu and Maya in action
Her assistant homeroom teacher. Chifuyu holds mutual respect towards Maya, complimenting the latter's skilled abilities at using the IS. She sometimes calls her Yamada-kun. However, there are times when Maya's teasing about Chifuyu's feelings for Ichika backfires when Chifuyu gives certain "suggestions" of corrective physical activity to make her apologize profusely. During times of crisis, Chifuyu and Maya can display impressive teamwork[5]
Even outside of work, Chifuyu can usually be seen with Maya, sometimes going out to drink together. Considering Chifuyu and Maya are Japan's former IS Representative Cadet and Candidate respectfully, it's possible they worked together before becoming teachers at IS Academy. While Chifuyu doesn't like it when Maya teases her when it comes to her younger brother, she doesn't mind talking to Maya about it sometimes in privacy.
Tabane Shinonono[]

Chifuyu fighting Tabane to protect her students
A close friend of hers. They both met each other in elementary school and after that, they were always in the same school and same class (thanks to Tabane making it so)[6]. Not much is known of their relationship yet, but they do sometimes contact each other secretly to exchange IS information, such as about Laura's VT system. She is a complete contrast to Tabane, who is extremely hyperactive and cheerful. Despite Chifuyu's constant complaining about Tabane's childish behavior, Chifuyu is the only person in the world to truly understand Tabane, thus resulting in their close relationship. She, at the least, seems to be aware of what Tabane has done and can tell when she's behind something, but hasn't told anybody about them. Chifuyu's tolerance for Tabane's actions was used up after the Excalibur ended up killing Ichika, with Tabane seeing it as a necessary sacrifice to get Chifuyu back in action[7]. Chifuyu's friendship with Tabane only worsens when Tabane tells Ichika the truth of their origins and allows Madoka to fatally stab him right in front of her[8].
Students[]
Chifuyu does hold her students in close and high regard, although she is upset at the fact that some of her students may one day take Ichika away from her, even stating that they will have to go through her to get him. While all of her students respect and admire Chifuyu, they still fear her wrath. After she declares to the main girls she won't let them have Ichika, they start seeing her as a rival and are extremely envious of the better treatment she receives from Ichika[9]. Despite being harsh and often way too strict with them, she cares about them more than almost anything in the world.
Houki Shinonono[]
The younger sister of her close friend, Tabane, and the 1st childhood friend of her younger brother, Ichika. Chifuyu shares a close almost sister-like relationship with Houki, both being serious young women who are more alike than their respective siblings. Despite this, Houki also questions Chifuyu's relationship with Ichika, and she began seeing her as a rival for his heart. When Houki first receives the Akatsubaki from Tabane, Chifuyu shows an uneasy expression and later warns Ichika that Houki might cause a problem in her excited state (which ends up happening)[10]. This comes from Chifuyu's personal experience with the first time Houki received a personal IS from Tabane when Houki had allowed her newfound power to get the better of her and challenge Chifuyu, which resulted in Chifuyu having to retire because of the damage Houki had done to her Kurazakura[11].
Lingyin Huang[]
The 2nd childhood friend of her younger brother, Chifuyu seems to be on bad terms with her, hitting her head when Lingyin first appeared in Ichika's class. In truth, she sees her as being annoying. She admits she always thought Lingyin would attack her someday. Like the other girls, Lingyin started seeing Chifuyu as a rival due to how close she is to Ichika. Lingyin is especially wary of being around Chifuyu when she's drinking, having experienced firsthand how much of a hot mess she becomes.
Laura Bodewig[]
A student that Chifuyu had trained during her time in Germany. She initially took a liking to Laura as she was emotionally scarred due to her spending all her upbringing in the military and suffered initial setbacks in training after the eye modification. This causes Laura to hold Chifuyu in high regard, like an object of worship. Having trained Laura before, Chifuyu knows what the young girl has gone through, and she would like to see her open up and become a normal girl. She seems to find some amusement in seeing how different Laura has become (in volume 5, Chifuyu bursts out in laughter when she hears that Laura has suggested a maid cafe and when she saw Laura in a maid outfit). She herself seems to encourage the relationship between her and Ichika, even directly questioning Ichika about his feelings for Laura. Laura also questions her relationship with her younger brother and feels jealous when Ichika gives Chifuyu better treatment than her.
Outside of work, Chifuyu doesn't mind being more casual around Laura, even treating her like a little sister and teasing her about her feelings for her younger brother. This is probably because Chifuyu sees a lot of herself in Laura due to their similar origins, being born as test subjects who were meant to be superior to normal humans[12]. Chifuyu also encouraged Laura to just be herself instead of trying to be like her and is pleased that she's trying to be more than just a super soldier.
Even though Chifuyu encourages Laura about her feelings towards Ichika and also teases it, on one occasion when Laura was going to punish Ichika for not having chosen her as his partner, Chifuyu intrudes, and Laura tells her that it is a husband and wife matter, to which Chifuyu responds by saying that she would not let an aggressive girl as Laura be her sister-in-law which leaves Laura in shock.
Charlotte Dunois[]

Charlotte is not happy with Ichika's reaction to Chifuyu's swimsuit.
The IS Representative Candidate of France and a student in Class One. Although she respects her, Charlotte also acknowledges Chifuyu as an official rival for Ichika's heart (even though Ichika misinterpreted Charlotte's words as anxiety about their volleyball match), after seeing Ichika's reaction to Chifuyu's swimsuit, which Charlotte angrily points out, stating that "he didn't look at the girls like that when they showed him their swimsuits," then asking Ichika if "Orimura-sensei was his type," to which Ichika quickly denies while still blushing. Charlotte was also bothered when Ichika was a princess carrying Chifuyu after their plane was shot down by Rogna, being jealous of how much she was clinging to him. Chifuyu seems to understand Charlotte's strained relationship with her father and offered moral support by having Laura travel with her when they had to stop in France[13].
Cecilia Alcott[]
The IS representative candidate of England. Chifuyu doesn't interact a lot with her, but she did use her as the first opponent for Ichika's debut battle and also as a demonstrator of the basic techniques of IS use. At the sea house inn, Chifuyu teased Cecilia when she was getting a massage from Ichika about the underwear she was wearing. After this event, Cecilia started wondering about Chifuyu and Ichika's relationship, and sees her as a rival for his heart.
Tatenashi Sarashiki[]
The Student Council President and the IS representative Cadet of Russia. Like everyone else, Tatenashi respects Chifuyu and is aware of how strict she is. Chifuyu is shown to respect Tatenashi's combat abilities as well and trust her enough that she even entrust her with more difficult task compared to the other students, such as confronting the squad of American soldiers. In volume 8, however, Tatenashi couldn't hide her newfound feelings for Ichika from Chifuyu, much to the latter's annoyance.
Others[]
Natasha Fairs[]
The pilot of the Silver Gospel and representative of America. They both met at the end of Volume 3 and discussed the Silver Gospel incident, having known each other prior. Despite Natasha's IS hurting her little brother, Chifuyu didn't hold it against her. She was also annoyed that she kiss Ichika as this caused trouble with the girls again as well as from her side. Chifuyu didn't tell Natasha it was Tabane who caused the Silver Gospel to go out of control.
Alicia Jiosestaf[]
The second Brunhilde. Alicia is Chifuyu's IS rival, and she does hold a level of respect for her. Alicia didn't wish to be called the Mondo Grosso champion because she didn't get to fight Chifuyu in the final match, showing how much she respects her. In order to have her match with Chifuyu, Alicia is willing to go as far as to join Phantom Task if it means she can fight her again[14]. However, she is only interested in fighting her, thus she won't accept any mission that doesn't involve Chifuyu[15].
Leader (Karen Calleria)[]

Chifuyu fighting Leader.
The captain of the Unnamed covert team. After the second Golem attack, the Americans sent a covert squad to steal the unmanned IS' that still had their cores and the Byakushiki at the same time, while Chloe Chronicle had hacked the IS Academy systems. However, Chifuyu and Maya dealt with the Leader, with Chifuyu luring her into a trap, so Maya could overwhelm and finish her. But rather than kill the Leader or use her as a hostage, Chifuyu chose to let her leave, knowing there were more disadvantages to doing so. Completely surprised, Leader tried to argue, but had her objection dismissed. After that, the Leader becomes loyal to Chifuyu and would aid her when requested. Deciding she needed a name, Chifuyu began calling her Karen Calleria.
References[]
- ↑ LN Volume 11 Ch 4
- ↑ LN Volume 12 Ch 4
- ↑ LN Volume 12 Ch 4
- ↑ LN Volume 12 Ch 4
- ↑ LN Volume 8 Ch 2 and OVA World Purge
- ↑ LN Volume 2 Epilogue
- ↑ LN Volume 11 Ch 4
- ↑ LN Volume 12 Ch 4
- ↑ LN Volume 4 Ch 4
- ↑ LN Volume 3 Ch 3
- ↑
LN Volume 12 Ch 3
- ↑ LN Volume 12 Ch. 4
- ↑ LN Volume 11 Ch 2
- ↑ LN Volume 10 Ch 4
- ↑ LN Volume 10 Epilogue