The story follows Hiroshi, a man past 50, his classmate and married woman Arisa, and his single-divorced best friend Sakura, whose lives intertwine into a passionate love triangle sparked by a reunion. Their relationship grows increasingly complex and filled with temptation, as hidden emotions entangle all three. Surrounded by his former lovers Arisa and Sakura, Hiroshi finds his heart stirred by their undeniable allure. Carried by the momentum of the reunion, Arisa and Sakura can no longer suppress their feelings for Hiroshi and begin secretly meeting him behind closed doors. Like shooting stars dancing across the twilight sky, new emotions ignite, giving birth to an unexpected bond between the three. As they confront the reality of adultery, their inner desires and conflicts unfold in an intense, burning narrative.