Kiriko Takana is a first-year student at Kunpō High School and a classmate of Kouta Oyamada. She shares a close friendship with Yuki Sasamori, affectionately dubbing her "Yooks." Coming from an affluent family, Kiriko frequently uses expensive gadgets. She effortlessly excels academically, consistently achieving top marks without noticeable effort or intensive study.

Her personality is marked by a distinct distrust and dislike of men, whom she broadly labels "beasts," a view extending to her criticism of Kouta for perceived perverted tendencies. Paradoxically, she actively imagines and mentally elaborates on romantic dynamics between Kouta and Chizuru Minamoto, often attributing Chizuru's advances to Kouta’s "irresistible aura." Together with Yuki, Kiriko participates in spreading school rumors, significantly contributing to Kouta's reputation as a womanizer.

Physically, Kiriko possesses green eyes and long black hair that reaches her waist. Her typical attire is the school uniform, complete with knee-high socks and a visible school crest.