Office worker, single. 28 years old, in her 6th year at the company. She joined the company at the same time as the protagonist. Lives at home with her parents. She gives a calm impression at work, and while she can be a bit prideful, she is well-liked and relied upon by junior female employees. Her parents have started nagging her to get married and give them grandchildren soon due to her age. While on the phone with her parents during lunch break, she got caught up in the conversation and blurted out that she has a boyfriend. Now that she has to bring him home this weekend, she is panicking and sets her sights on the protagonist, her colleague. She has always been on good terms with the protagonist but viewed him only as a coworker, not as a romantic interest. However, by pretending to be lovers, Ami's feelings begin to change... She has had one boyfriend in university and one after starting work, but both relationships ended quickly, so she has little romantic experience.

55 years old. Office worker. Ami's father. Friendly and mild-mannered. He wants his daughter to start thinking about marriage, and since Ami showed no signs of it, he began mentioning grandchildren. He is looking forward to her bringing a boyfriend home. He doesn't have a stiff "I won't give you my daughter" attitude and is supportive of the relationship from the start. He speaks to the protagonist in a friendly manner. He and Emi still have an active romantic life.

54 years old. Housewife. Ami's mother. A woman with a kind and inclusive atmosphere. A typical good wife and wise mother. Like Makoto, she wants Ami to marry soon, so she is excited to meet the first boyfriend Ami has ever brought home. She is satisfied with her ongoing romantic life with Makoto.