Kiriko and Naho are close friends who bonded as moms in their social circle. They shared everything and had built a deep trust—yet Kiriko harbored a secret she hadn't revealed to Naho: she was a lesbian and had romantic feelings for her. One day, exhausted from her marriage, Kiriko opened up to Naho about her struggles. But midway through their conversation, Kiriko fell asleep. Seeing her peaceful expression, Naho instinctively leaned in and kissed her. In that moment, their relationship changed forever.