Tomoe Wajima presides as head waitress at Kissuiso hot spring inn. At 28 years old, she holds seniority among the serving staff and assigns tasks to junior waitresses like Ohana Matsumae and Nako Oshimizu. Her work demeanor blends professionalism with avid gossip-mongering; she actively listens to conversations about employees and guests, readily sharing any intriguing information she acquires. This tendency surfaces early, such as when she promptly briefed Ohana on coworkers' personalities upon meeting.

Societal and familial expectations regarding marriage form a recurring theme in her personal life. Tomoe faces persistent maternal pressure to marry, frequently reminded she remains the only unmarried one among her former friends. While expressing a desire for a boyfriend, ideally wealthy, she cites her dedication to inn work as hindering romantic progress. This situation fuels sensitivity about her age compared to younger colleagues, prompting her insistence that Ohana and Nako call her "Onee-san" (big sister) instead of the workplace-typical "Senpai" (senior). Encounters with younger women who have boyfriends often trigger visible jealousy, reflecting her personal frustrations.

Physically, Tomoe has brown hair and brown eyes, often sporting brown odango (buns). She wears the standard waitress kimono uniform while on duty. Her background includes a local upbringing, with her mother maintaining an active presence in her life. The character appears in the film *Home Sweet Home*, set during an autumn holiday at Kissuiso featuring a power outage and the discovery of old logbooks. Her presence as part of the Kissuiso staff during these events is confirmed. She has no documented appearances in other official spin-offs or media beyond the core television series and this film.