Kōsui Kanda, a famous novelist, journeys with his young son Akane following the death of his wife, seeking to alleviate the boy's depression. Stranded roadside with Akane suffering a fever, they are discovered by Oriko Seki and taken to her grandmother's inn for care. Kōsui possesses the appearance of a young adult with long black hair and a short, unshaven beard.

After Akane recovers, Kōsui thanks the inn staff, revealing other lodgings were fully booked. He clarifies his travels are solely to support his grieving son, not novel research. When Matsuki Akino offers luxurious accommodations at Shuukou Lodge, Kōsui chooses to remain after hearing Oriko express her dedication to genuine hospitality. Later, witnessing Oriko resourcefully create "hot bath pudding" to fulfill Akane's wish for cake deeply touches Kōsui. Inspired by this gesture and the inn's compassion, he writes a positive magazine review. His endorsement significantly elevates the inn's reputation and attracts new guests.