Arisa Uotani (魚谷 ありさ, Uotani Arisa), aged 16–18, is a fictional character in the manga Fruits Basket. She is a former gang member (a "yankee", the Japanese version of the American "thug" image) and one of Tohru's closest friends. She is extremely protective of her and regularly protects her from the Yuki's fan club. Her other best friend is Saki Hanakima. Both Hanajima and Uotani were outcast and disliked by classmates yet Tohru Honda never shown any hatred towards them and became their first friends.
Arisa is depicted as tough, brash, and sometimes violent; she wears long skirts, sometimes carries an iron pipe, and often speaks like a man. Arisa is tall for a girl, and once claims she wishes to reach 6 feet (1.8 m) tall. She is especially competitive with Kyo and bickers with him frequently. Her childhood was troubled: father is an alcoholic and her mother left him for another man when Arisa was young; Arisa joined an all-girl gang (called "The Ladies") in fifth grade, and idolized Kyoko Honda's reputation from her gang days. When Arisa met Kyoko's daughter Tohru in middle school, and then Kyoko herself, she was shocked by the change from gangleader into doting mother, but became friends after Kyoko helped her escape from her gang. With Saki Hanajima, she swore on Kyoko's grave to look after Tohru, and in her "parental" protection of Tohru with Hana-chan, noted by Kyo and Yuki, she comes off as the brash and direct father-figure. Tohru calls her Uo-chan and her manga symbol is a fish, the meaning of the first kanji (魚) of her family name. Arisa works a couple different part-time jobs during the series; at one of them, in a convenience store, she meets Kureno Sohma and is immediately attracted to him, though she worries about their nine-year age difference. They meet a second time a few days later but after that, when nearly kisses her after buying her lunch, he then refuses to see her again because of his promise to Akito, and she tries to get over him. When Kureno leaves Akito, she helps him move out, telling him that she has been waiting for him all this time, and in the final chapter she is preparing to move in with him.