Hotaru works as a caregiver single-mindedly. She had a great reputation, and she was popular with caregivers. In such days, when she was about to go home after taking care of her, a sudden heavy rain stopped transportation, and he was helpless and took refuge in her caregiver's house. Transportation starts in the morning. Firefly she ended up staying at an elderly person's house. The fact that a man and a woman stayed in the same house overnight... Age was irrelevant to that act.
