Ariake is an amiable girl, though she becomes distrustful of her fellow members of the Athletics Club after she is attacked. She is one of the few people who doesn't think Zenkichi Hitoyoshi's style of dress is stupid.
Ariake wears the standard girl's uniform of Hakoniwa Academy, as well as the uniform of the Athletics Club. She has brown eyes, and her dark pink hair (brown in the anime) is done up in two ponytails with green hairbands. At the Seiyasai, Ariake wears a light colored scarf with her uniform. Ten years later, Ariake wears an apron over a dark shirt.
Student Council Executive Arc
Ariake approaches the Student Council after her shoes have been vandalized, and a note saying "Quit the Athletics Club" is left in her locker. Understandably upset, Ariake asks Medaka Kurokami and Zenkichi to find the cluprit. Medaka promises to expose the culprit in one day. Zenkichi is more skeptical, citing their lack of evidence, though pair do manage to find the culprit even so (senior Isagi Isahaya, though Ariake remains unaware of this fact). The next day, while wondering why no one appreciates his style, Zenkichi is approached by Ariake, who tells him that the sneakers she was using to train with were replaced with new running shoes and a note saying "Sorry".
At a later date, Ariake is seen running with Isahaya. Isahaya scolds her for taking too long to get changed, and if they do not hurry they will miss morning practice. Ariake apologizes, but questions why Isahaya waited for her, commenting that she has been a lot nicer to her lately. Isahaya insists she has not, and not paying attention, crashes into someone. When Ariake asks if she is all right, a flustered Isahaya asks who that was. Ariake identifies him as Kouki Akune, the prince of the Judo Club.
At the Club Battle Swim Meet, Ariake is seen as one of the participants representing the Athletics Club, along with Isahaya. Isahaya and Ariake take part in the second event, the three legged race. When Zenkichi and Akune take the lead in the race despite their poor teamwork, Ariake is seen looking surprised with Isahaya. Both she and Isahaya are seen shocked along with everyone else when Umumichi Yakushima and Sotsu Tanegashima begin swimming with their legs tied together, taking first place. The Athletics Club comes in second place. At the end of the third event, the Athletics Club is in second place overall. During the final event, the cavalry battle, Ariake is seen as one of Nekomi Nabeshima's victims when Tanzaku Aso explains how the Judo Club won the competition.
After Medaka crash-lands outside of the school and asks Isahaya for her cleats, Ariake wonders what Medaka did to destroy her old shoes.
Kumagawa Incident Arc
At the end of the semester, Ariake is present for Medaka's speech. She is surprised by Misogi Kumagawa's sudden entrance, and declaration that he is Medaka's ex. On August fifteenth, Ariake is among the students who come to the Vice-President's Battle to cheer for Kuudou Hinokage. Ariake is among the students who boo Class -13 after the Vice-President's Battle ends. On August twenty-second, Ariake and other students try to attend the President's Battle to cheer for Medaka, but are unable due to the nature of the match.
Bouquet Toss To The Future Arc
Ariake is among the students who confront Medaka at the beginning of the 100 Flowers Run, holding flower number six. She and the others are all blown away by Medaka's Kurokami Final. All present wonder if Medaka thinks of their time together as good memories. Her message to Medaka is the assurance she is in high spirits.
Ten years later, Ariake and Isahaya are kindergarten teachers.
Sprinter: Ariake is a regular on the Athletics Club, a notably difficult position to achieve. She specializes in sprinting.
- Ariake was voted the seventeenth most popular character in the series in the first popularity poll with 90 votes.