Chihiro Takanashi hails from a wealthy family as the daughter of a president overseeing a renowned restaurant chain. Despite this privilege, she works as a waitress at Milkyway, believing in earning income through her own labor rather than relying solely on family wealth.

She stands 160 cm tall with brown hair and brown eyes. Her bust-waist-hip measurements are documented as either 79-52-81 cm or 81-53-84 cm across sources. Strong moral principles led her to end her past romantic relationship with Kenji, Milkyway's manager. Unresolved feelings linger, however, creating a complex dynamic where she attempts to rekindle their connection.

At work, Chihiro presents a friendly and relatively ordinary demeanor, forming positive relationships with colleagues without excessive sensitivities. Her practical skills are hampered by clumsiness and physical awkwardness, especially in tasks requiring coordination which often end in mishaps. This stems from limited prior experience in domestic or service responsibilities due to her affluent upbringing.

Her relationship with Milkyway's owner, Rin Yuuki, is antagonistic, characterized as "frenemies," fueled by their shared connection to Kenji and rivalry for his affections. Within her family, she is the younger sister of Hiroaki Takanashi. Remi Toujou, who took the Takanashi surname, is presumably married to Hiroaki.