The "wheels of mystery" begin to move when a man working at a small shipyard meets a female student who seems to get upset at the sight of him. While they eventually get closer and end up dating, they need to take a step forward as their pasts come in between. Adapted from the novel "Yasashii Ongaku" (優しい音楽) by Seo Maiko (瀬尾まいこ).