When Nanako entered high school, she had two goals in mind: finding an extracurricular activity and a potential love interest. She believed that Yukiya-senpai, a member of the Tea Ceremony Club, met both criteria. His poised and charismatic demeanor caught her eye, but unfortunately, Yukiya rejected her request to join the club. However, Nanako refused to give up and eventually won Yukiya over with her unwavering persistence. This allowed her the chance to exhibit her abilities and officially become a member of the Tea Ceremony Club. As they continued to work together brewing tea, their affection for each other grew stronger.