Miharu works as a secretary at an IT company. She has a boyfriend named Shuji, whom she’s been dating for three years. Although she respects Shuji for his professional competence, their conversations always revolve around him. Miharu rarely gets a chance to speak; she usually just ends up listening. Although she learns a lot from him, the feelings she really wants to express get left behind in the middle of their conversations... One day, on her way home after working overtime, as Miharu was looking at her smartphone on the train, an ad for a tennis trial lesson for beginners caught her eye... A story about the small “new steps” taken by adults.