Shiina, a first-year college student in Niigata Prefecture, relishes her tranquil life with her boyfriend Shuu, a dedicated coppersmith. Accustomed to the comforting echoes of his hammer, she affectionately labels him as the 'smithing enthusiast' due to his unwavering commitment to his craft, even on weekends. However, Shiina finds herself taken aback when Shuu unexpectedly pops the question! Fresh out of high school, she grapples with the idea of taking this significant leap. The real question looms: Is she prepared to join a renowned family of artisans through marriage?