At 41, I’ve been married for 20 years and still live enveloped in my husband’s kindness. He comes home faithfully every day, never cheats, and treats me with care. Yet, our intimate life has long disappeared. Sharing the same bed, I lie beside him night after night, aching with loneliness as he no longer holds me. But one day, everything changed—my husband received three complimentary hot spring inn vouchers from a business client, and we decided to invite his younger brother, Takuya, to join us on the trip. That journey became a turning point, awakening desires I had long buried.