Tomochan works at the front desk of a private hospital. After graduating high school, she landed the job by a lucky chance despite having no qualifications. She gives off a calm, easygoing impression with a laid-back personality, but having worked in the strict environment of a hospital, she's actually quite responsible and diligent. With almost no overtime, her off-duty life contrasts sharply with her innocent appearance—she's been very active sexually and is on the verge of surpassing 20 partners, earning recognition for her experience. In her private life, she enjoys going with the flow and relaxing, coming across as completely natural and at ease.