Yuzuru Otonashi/Relationships

Yuri Nakamura
Yuri and Otonashi currently hold a close relationship, often referring to him as Otonashi-san instead of Otonashi-kun. He holds a very deep trust in Yuri ever since his first meeting with her in the Afterlife, mostly due to her intuition. After the formation of the Afterlife Battlefront organization once more, she was able to gain enough influence and manpower to effectively alter his life decisions, even going as far as telling someone to open a door for him or paying for his coffee.

Going as far as visiting the gravestone of Otonashi's sister, she wanted to make herself visible to him in order to bring him back to the fold. However, her agreement with Shiina made it difficult to effectively indoctrinate him.

Otonashi has recently began questioning Yuri's intentions and feelings regarding him and the battlefront. As time passes by, she has put him into an operation that was not known to any of the Top Brass members as well as be close to him exclusively.

As Yuri had personally intervened in Operation Medical Watch (which was violation of the rules set up by both her and Shiina), and that she had hesitated prior to answering Hatsune on whether or not she was in love with him, it was clear that she had romantic feelings at some point.

Hideki Hinata
Hinata is Otonashi's best friend, often watching his back and offering friendly advice. Hinata also assisted him to adjust from a civilian life back into the Afterlife Battlefront. While there are occasions where their relationship is outright questionable enough, they only poke at eachother in good fun.

Takamatsu
There aren't any intricate details mentioned specifically in any chapters that detail Takamatsu's relationship to Otonashi. However, Takamatsu believes that Otonashi would be one of the best assets in the battlefront considering their lack of medical personnel.

Takeyama
While Takeyama and Otonashi don't have a direct relationship, it was known that Takeyama was reluctant to reveal Otonashi's details to Yuri. While the exact source of reluctancy is unknown, it is most likely his views of Otonashi coincided with Shiina's, to which she believed that he shouldn't return to the battlefront under the grounds that he's done more than enough for the group.

Eri Shiina
Shiina holds Otonashi in high regard following the events of Angel Beats!. She's held a special view for him to a comparable level with Yuri, understanding him to be perceptive. Because his perception is something she lacks, she is envious and attracted to Otonashi. She initially refused to participate in Operation Medical Watch, citing that it wasn't their place to bring him back into the battlefront once more and that if he were to rejoin, it would be of his own free choice and not because they asked him to.

Shiina has trained Otonashi on multiple occasions in close quarters combat. They exchange information often, Otonashi exchanging his medical knowledge to receiving her close quarters combat techniques and moves. As a result of this, she developed a mutual respect for Otonashi, going out of her way to include him in her personal operations, despite Yuri's disagreements.

She has began to see Otonashi in a different light following Chapter 12, where Otonashi decided to give her a stuffed toy puppy as a way to thank her for training and dedicating her time to training him. She blushes in embarassment and couldn't dare to look him in the eye as he smiled at her.

As revealed in Chapter 13, Otonashi is held in a completely different standard as she easily found herself manuevering through his house quite easily and was able to sleep in his bed half-naked without harboring any sort of embarassment or decency. This is a large indicator that she sees him as someone she can completely trust.

Ayane Sarashiki
Meeting late into A Step Closer, Otonashi initially disliked Ayane because she overwhelmed him. After getting her reasoning and explanation, he found her to be charming and even envied her for her passion in her job. He noted that because she is so passionate, she never worked a day in her life. Her attitude finally toned down to where he was comfortable with her and they've become moreso friends than co-workers.

Satsuki Akiyama
Officially meeting in chapter 11, her official comment to Otonashi was that he was, "cute." To Otonashi, she seemed to be a bright and go-happy female who occasionally stepped out of bounds.

Although initially helping him out following the meeting with the Yakuza, Otonashi's view on Akiyama changed as she pulled him towards her to hold a close conversation with him in a urgent/worried tone. Since the bright and go-happy female personality of Akiyama disappeared, Otonashi holds somewhat of a fear due to her unknown capabilities along with a lack of understanding to her true personality and intentions.

Genji Furukawa
Genji and Otonashi are on mutual terms and see each other as acquaintances following their meeting with the Yakuza.

Takashi Tsujihara
Otonashi holds Takashi to high regard and both hold a mutual respect to each other. Seeing Takashi as the strong, hard-hatted leader that he is, Otonashi knows on a personal level how hard it is to lead, and why a leader must act the way they do in order to keep a group of people together and at the same time, effective.

Masami Iwasawa
Unknown to Otonashi, Iwasawa had a completely different experience in the Afterlife compared to most of the members in the battlefront. Instead of disappearing after singing, "My Song", he intervened and prevented her disappearance. While Otonashi doesn't recall such events, she still harbors feelings of extreme love to him and offered him her bike after eating out with the entire battlefront top brass. It is still unknown to all members of the battlefront that she had a completely different experience in the afterlife.

She refers to Otonashi by his first name and often writes her name as, "Otonashi Masami".

In Chapter 6, she attempts to keep her cool while explaining her situation to Otonashi, only to run outside in the rain. She then kisses Otonashi who doesn't protest, after he hugs her from behind.

Shizuka Tatenashi
Tatenashi is one of Otonashi's most trusted colleagues within the XTE Medical Center.

Following the aftermath of Hatsune's death, she attempted to keep him at the hospital using the aforementioned event to convince him that she wouldn't want this. However, this completely backfired on her and Otonashi immediately despised her for it.

Kaiya Otonashi
Otonashi views Kaiya as the more annoying of the two parents he had. She was the mother who always checked up on him, made sure that he ate, checked his homework and his grades. She also ensured that he had developed good habits, which in his eyes began to overstep her boundaries and he had a rebellious age around middle school and the beginning of high school. As he grew older, he began to recognize the necessity of the way she acted around him and began to care for her a bit more.

Naturally, he preferred his father due to him being a lot more lenient and humble, but he knows currently that both his mother and father had a hand in developing who he is.

Following the death of Hatsune, Kaiya and Yuzuru failed to keep in contact with eachother, mostly out of sheer inability to do so.

Hatsune Otonashi
As Otonashi was the only member of their family alive, it is natural that they were close to each other. Otonashi often visited Hatsune whenever he could and whenever he wasn't busy, but she pestered him to go out and do whatever is that he wanted to do, and to visit her when it was conveniant.

During Otonashi's spare time, he would read medical sources and consult medical experts regarding Hatsune's condition in order to learn more and to find better alternatives for treatment.

Following Otonashi's revival, it was soon discovered that Hatsune had a bit of luck on her side as her condition improved despite needing a donor. As time continued to pass and various treatments were administered, the constant use of those treatments left her body weak and her condition worsened exponentially. Unknown to her brother, she had signed DNR papers which relinquishes the hospital's ability to revive her in the case her body fails, to which it did.

His thoughts often deviate to Hatsune whenever there was a notion of sibling interaction, especially if that sibling interaction contained a female. He wishes that he did more and that he is sorry that he failed her for all these years, and ultimately taking away the final wish she had wanted to give to him: to make it easy for Otonashi.

Nariko Masumi
While both only briefly knew eachother, Otonashi holds a respectable view of the teenage girl. After discovering her attempting to sell her body then changing her mind, he intervened. Afterward, they both hid from responding police officers in which she attempted to calm him down to his surprise. Chatting for a bit with Otonashi refusing to leave her alone, he brings her close to her house in which she tells him why she did what she did.

Moved by her story, Otonashi gave her what he had in his wallet (tens of thousands of yen) and gave her some advice.