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— To Rin, about the competition
|Also known as|| Ai (by Rin)
Ai-chan (by Nagisa)
|Birthday||January 4 |
|Height||168 cm (5'6")|
|Weight||57 kg (126 lb)|
|Occupation||2nd year High School Student|
|Affiliation|| Samezuka Academy|
Current captain of the Swimming Team
|Swim Style||Breaststroke, Freestyle (Crawl)|
Aiichiro Nitori (似鳥 愛一郎 Nitori Aiichirō) is one of the main supporting characters of the anime series Free!. He is the breaststroke and freestyle swimmer on the Samezuka Academy swimming team and a 2nd year high school student at Samezuka Academy.
Aiichiro has light blue eyes, and short grey hair with short, straight bangs. He is portrayed as quite a bit shorter than Rin, but nevertheless, is about average height. A notable feature of his is his beauty mark, which is located diagonally under his right eye.
Aiichiro seems to be friendly and a slight chatterbox. Sometimes he speaks a little too much, like when he mentioned that all the Iwatobi swim team members have girly names, but is quickly reminded by Rin's glare that Rin also has a girly name. While he is not always quiet and reserved, Aiichiro is a consistently hardworking swimmer, who recognizes his own limits. He admires Rin to the point of wanting to specialize in two swimming styles (breastroke and freestyle) just like him, and does anything he can for Rin. Aiichiro remains a bubbly person, never giving up, even when Rin snaps at him or finds him annoying.
Probably because they share the same room, he often does the same things as Rin. He looks up to Rin and feels sincerely happy for his victories. He participates earnestly in club activities and is a hard worker. Nitori felt miserable and frustrated with himself, since he was not able to participate in his preferred event. Because of that, he wasn’t able to understand Rin who, although he was able to participate in any event, only participated in the 100-meter free. 
When Rin said that he would "see his father," Aiichiro misunderstood him and sobbed out, "No, you can’t die!" Those were pure tears which came from listening to Rin's obstinate heart. More so than his tears, his crying face was emphasized. During the joint practice with Iwatobi High School, the side of Aiichiro who firmly separates business was shown. He warned Rei, who wasn’t wearing a swimsuit, and urged him to go change.
In elementary school, Aiichiro was in the same swimming competition as Rin, Haruka, Makoto, and Nagisa. However, he and his team lost in the prelims. Even so, Aiichiro was extremely moved after watching Rin and everyone else’s winning relay. Ever since, he has looked up to Rin.
- Main article: Aiichiro Nitori/Plot
- Main article: Aiichiro Nitori/Relationships
Creation and ConceptionEdit
The director of Free!, Hiroko Utsumi, commented that, if you left Rin alone, he would be isolated without anyone, so there needed to be a character — more like a conversation partner — who would draw him out. The character who had been born out of this need was Aiichiro. Aiichiro's role was to draw out Rin’s heart. Because Rin could understand parts of Aiichiro that were like himself, he felt like talking to him. Aiichiro is not discouraged by Rin's hard-heartedness, and is unexpectedly bold as well. Utsumi added that he's a very cute kouhai. The character designer, Futoshi Nishiya, said that from the very beginning, he was to have bobbed or "mushroom" bangs. That way, there wouldn't have been conflicts with other characters' designs, and Aiichiro could have been drawn smoothly. At first, there was a version of him who wore glasses, but it was scrapped as unnecessary. Since Aiichiro was a boy with a cute feeling, the staff had to be careful not to clash his with Nagisa's design. For his hair, they first thought about some green sort of pattern, but in the end, they settled on a bluish-grey silver.
- His and Rin's room number is 210 and is across the hall from Seijuro's.
- Aiichiro's desk is always untidy, much to Rin's annoyance.
- In elementary school, Aiichiro used to write an observational journal on Daphnia. He still keeps it on the desk in his room in Samezuka Academy.
- Aiichiro is seen having a Porny Heaven book, hinting that he could be interested in that kind of stuff.
- His class is 1-3.
- He's writing My Journal On The Morning Glory Flower.
- His hobby is playing with dogs.
- His official spirit animal is a duck, however he is also popularly linked with the seal and pilot fish.
- At the end of his third year, Rin appoints Aiichirou as Captain of the Samezuka Swim Team.
- Aiichiro's first name (愛一郎) contains the characters 愛 (Ai) "Love", 一 (Ichi) "One", and 郎 (Rou) "Son". His surname (似鳥) contains the characters 似 (Ni) "Similar" and 鳥 (Tori) "Bird".
|Haruka Nanase • Makoto Tachibana • Nagisa Hazuki • Rei Ryugazaki • Gou Matsuoka • Miho Amakata|
|Chigusa Hanamura • Tadanori Sera • Male Teacher|
|Rin Matsuoka • Sosuke Yamazaki • Aiichiro Nitori • Momotarou Mikoshiba • Seijuro Mikoshiba • Shouta Nakagawa • Takuya Uozumi • Kazuteru Minami • Toru Iwashimizu|
|Goro Sasabe • Mr Tachibana • Mrs Tachibana • Ren Tachibana • Ran Tachibana • Mrs Tamura • Nanako Hazuki • Hayato Shigino|
|Kisumi Shigino • Aki Yazaki • Asahi Shiina • Ikuya Kirishima • Nao Serizawa • Natsuya Kirishima • Nii Satomi • Shota Yazaki • Tomo Yuzuki • Sakuyuki Narukawa • Riku • Kakeri • Kazu • Wataru|