Kosu walked along the quiet streets of Jinpei's hometown, taking in the sights and sounds around him. The people here were friendly and helpful, pointing him in the right direction when he asked for directions to Jinpei's home.

Eventually, he found himself standing in front of a modest brick house. It was not particularly big, but it looked cozy and inviting. Kosu took a deep breath and knocked on the door.

As Kosu approached Jinpei's home, he felt a sense of unease. He had no idea what he would find inside. The house was modest, made of bricks and painted white. As he walked closer to the front door, he could see the curtains drawn in the living room, and a soft light filtering through.

Kosu knocked on the door and waited patiently. After a few moments, the door creaked open, and he saw a woman in her late fifties, with kind eyes and a gentle smile. She looked at Kosu curiously before speaking.

"Yes, can I help you?" she asked kindly.

"Um, yes," Kosu replied. "I'm looking for Jinpei. I'm a friend of his from the Adventurer's Guild. We've been separated, and I'm trying to find him."

The woman's face softened. "Oh, Jinpei," she said. "He hasn't been home in a long time. But please, come in. I'll tell you what I know."

Kosu stepped into the house, feeling a little uneasy. He had never been to Jinpei's home before, and he didn't know what to expect. But as he looked around, he saw that the house was tidy and well-kept. It was clear that the woman took great pride in her home.

They sat down at a small table in the living room, and the woman poured them some tea. 

There, he saw a frail-looking man lying on a bed, his face contorted in pain. The woman noticed Kosu's gaze and explained, "That's Jinpei's father. He has Parkinson's disease. It's been a long time since he's been able to move or even talk."

"Parkinson's disease?" Kosu asked, he doesn't know about this disease uptil now.

"It's a degenerative disease," she said, her eyes sad as she looked down at her hands. "It affects the nervous system and makes it harder and harder for the body to move properly. The tremors are one of the most well-known symptoms, but it's much more than that."

"It's as if a dark curse has been placed on my husband," she said. "The curse paralyzes his nerves, making his body shake uncontrollably. The curse also affects his mind, causing him to forget things and struggle with simple tasks."

"But it's not a curse is it? So can our current technology cure this disease?" Kosu asked.

"Yes, we went to the hospital. They say it's because the body doesn't produce enough dopamine in the brain. Dopamine is a chemical that helps regulate movement and mood. Without it, the nerves cannot function properly, causing tremors and other symptoms."

Kosu's heart sank as he looked at the man. He couldn't imagine what it would be like to be trapped inside your own body like that. Jinpei's mother must be under a lot of stress taking care of him alone.

Kosu nodded, understanding the gravity of the situation. "I'm sorry to hear about your husband," he said softly.

Jinpei's mother noticed Kosu's concern and said, "Thank you. It's been hard, but we manage. My husband has been bedridden for many years now, but Jinpei has been a great help to me. He's been taking care of us since he was young. Jinpei's sister and her family also living nearby, so they help out when they can."

Kosu nodded understandingly. "I see," he said. "Do you have any idea where he might have gone?" Kosu asked, trying to keep his voice calm.

The woman shook her head. "I'm sorry, I don't. Jinpei was always a bit of a wanderer. He liked to travel and explore new places. But he always came back eventually."

Kosu thanked the woman for her help and stood up to leave. As he was putting on his shoes, the woman stopped him.

"Wait, there is something you should see," she said, leading him to a small room at the back of the house.

Inside the room, there was a large map of the region hanging on the wall. The woman pointed to a spot on the map and said, "Jinpei always talked about visiting this place. He said it was a sacred site, where he could feel the presence of his ancestors."

Kosu studied the spot on the map, committing it to memory. It was a long shot, but it was better than nothing. He thanked the woman again and left the house, determined to find his friend.