Reaching the building, he followed the shinobi and saw a scene that was very brutal. A man was biting into a woman that looked extremely weak and malnourished. The woman had red hair reaching her neck that looked like it lost its lustre.
He was extremely surprised to see this scene and looked at the rows of beds with injured shinobi looking at her as if waiting for their turn.
As the man finished his bite, his injuries started looking a lot better. Raiden was surprised at this and stealthily activated his Sharingan. He observed as another patient bit the woman and his injuries started to get better.
When observing with the Sharingan, he realised two things. First, the woman had huge chakra reserves and second, the man was taking her Yang chakra to heal his injuries.
Suddenly a little girl, maybe three years old, that looked like the woman with red hair and also huge reserves, tried to dissuade her from letting the men bite her.
"Mom, stop doing that. It only makes you weaker. They are killing you." Said the little girl with tears forming in her eyes.
The woman smiled at the girl while the man finished his bite.
"It's okay Karin. It's only right that I help as we were allowed to live here. Now go home, I'll be back in a few hours."
Before the next shinobi could bite her, someone grabbed her arm and distanced it from him.
"Let me go, child, wait for your turn." She said thinking he wanted to be healed.
"Your daughter is right, you should stop this right now. They are taking away your yang chakra. Even if you are an Uzumaki, how long do you think you can live with them stealing your vitality."
The woman was shocked at the child who looked, at most, ten recognizing what clan she was from.
"If you die, what makes you think they won't use your daughter for healing?"
The woman flinched at the boy saying the biggest worry she had.
"You have an ability that isn't seen even among Uzumaki and you waste it like this healing these cannon fodder."
Some of the injured shinobi heard him and wanted to beat him up, but before they could do anything he cast a Genjutsu on them to calm them down.
At this moment, the toad Jiraiya gave him started speaking.
"Where are you kid?" Said the toad in a voice resembling Jiraiya.
"Sensei, come to the hospital, it's very important."
"I'm on my way." Jiraiya said before the toad went back inside his clothes.
Jiraiya flickered to the entrance of the hospital and saw Raiden holding the arm of a red-haired woman with a child behind her that had tears on her eyes.
"What are you doing to the woman?!" Said Jiraiya thinking he was doing something weird.
"Sensei, look at her arm."
Jiraiya looked closer at her arm and was horrified at all the bite marks. Before he could ask Raiden was explaining the situation to him.
"This woman is an Uzumaki, and by the looks of her chakra pool and ability, a main descendant of the clan. She has a unique ability to transfer her Yang chakra to someone else and heal them using it. Kusagakure has been using her to heal their shinobi."
Jiraiya was first stunned then mad. The Uzumaki clan was the greatest ally Konoha had. Not telling them of her existence here was very angering to him. He took a good look at the woman and saw just how weak her body looked. She must have lost a good amount of her yang chakra, if this kept up for a year or two she would've died.
At this moment, a shinobi that had fair skin, black hair that was combed back and reached shoulder-length, grey pupilless eyes, wearing the Kusagakure forehead protector on his forehead, dark brown-grey kimono-like shirt with cream outlines, black pants, a white rope tied around his waist, black socks, and black sandals.
He looked towards Jiraiya and said:" Jiraiya-san, this matter is ours to handle. this woman is a citizen of Kusagakure."
Jiraiya gave him a quick glance before ignoring him altogether.
"What's your name?" Asked Jiraiya towards the woman.
"My name is Uzumaki Hisana. this is my daughter, Uzumaki Karin"
"Good, go get your stuff, you're coming with us."
"You have no righ-" The man was cut off by a glare from Jiraiya.
"I have every right. this woman is one of the main descendants of our biggest ally, and you have been keeping her a secret from us. It's good enough that I'm not cutting off all ties with you for trying to kill her."
"She agreed to do thi-"
He was cut off again by Raiden this time.
"Of course she would agree. She's not even a ninja it seems and she has a child with her, how will she survive if she doesn't agree."
"You, go tell your leader that this will be remembered by Konoha." Jiraiya pointed to the man and said.
The man was clearly angry, but he knew that he couldn't do anything to him. This was Jiraiya, one of the Three Sannin, not to mention he had Konoha behind him, the strongest of the five great villages. He flickered away before he did something stupid.
"Ok, where is your house? we'll help you." Said Jiraiya before moving ahead to support the woman's frail body.
"Follow me." Said the little girl, smiling now, her mother didn't have to do this anymore.
Jiraiya and Raiden followed Karin while supporting the woman. A couple of minutes later, they reached a small house barely enough for them.
Jiraiya nodded towards Raiden and Raiden went inside with Karin to get their stuff with her.
When they came out, Jiraiya was asking the woman how she got here and why she didn't try to go to Konoha.
"I don't know much about Uzushiogakure as I was a child when it was destroyed, so I didn't know where to go. I wondered for a while until I met Karin's father. We lived in a small village for a while, but it was attacked by bandits and he died so I came here with Karin. I told them of my ability and they let me stay here if I healed their shinobi."
"It's okay, now that you're with us no harm will come to you. You won't have to heal anyone like that anymore." Said Jiraiya to Hisana.
"Sensei, we're done." Said Raiden.
Jiraiya nodded. "Let's go." And they started their return trip to Konoha which took much longer as they had a sickly woman and a child.