夫が不在の寂しさを紛らわせるため、甥の浩司と同居を始めて数ヶ月。何事もなく過ぎていた平穏な日常は、脱衣所での一瞬の出来事で崩れ去った。湯上がりの唯が目撃したのは、さっきまで自身が身につけていた下着の匂いを貪るように嗅ぐ浩司の姿。衝撃の事態に動揺しながらもなだめようとするが、彼の溢れんばかりの熱量と興奮でそそり立つ雄の証を突きつけられ、言葉を失ってしまう。理性を揺さぶる圧倒的な熱に包まれ、長らく忘れていた胸の疼きが激しい炎となって燃え上がり…。

To alleviate the loneliness of her husband's absence, Yui had been living with her nephew, Koji, for several months. Her peaceful daily life, which had been uneventful, was shattered in an instant in the changing room. After her bath, Yui witnessed Koji greedily sniffing the underwear she had just been wearing. Though shaken by the shocking turn of events, she tried to comfort him, but was left speechless by his overflowing passion and the erect symbol of his masculinity. Enveloped in an overwhelming heat that shook her reason, a long-forgotten longing in her heart ignited into a fierce flame…