Sumire was running a small cafe that wasn't particularly bustling but offered a cozy atmosphere where one could spend leisurely time. Despite not being overly profitable, her husband's support allowed the business to continue. However, their relationship had grown cold due to his infidelity. Meanwhile, Hikaru struggled to make his wife understand the beauty of coffee. One day, he met Sumire at her cafe and asked her to teach him how to brew coffee properly. As he became enamored with her gentle demeanor while preparing coffee, Hikaru found himself drawn to her, drifting away from his wife both emotionally and physically.

すみれはとあるカフェを営んでいた。客が多く来るようなにぎやかな店ではないがゆったりとした時間を過ごせるお店となっていた。経営者である夫の力もあり利益が出ないながらもこのカフェは続けられているが、夫の浮気もあり夫婦の関係は冷めてしまっていた。一方、北は妻にコーヒーの良さを理解してもらえないことを悩んでいた。そんなある日北はすみれのカフェで出会いすみれにコーヒーの淹れ方を教わった。丁寧にコーヒーを淹れるすみれに惹かれていく北は夫から心が離れた彼女と体を重ねるのであった。