Ever since she was small, she knew how to build. Anything she could get her hands on, it would be turned into something entirely different. Katsu's parents thought of her as smart. Not a prodigy. That was something reserved for ninjas.

When her mother had died, Katsu's father had become obsessed with her becoming a ninja. He was convinced that because he was a shinobi, she could easily become a kunoichi. He was wrong.

On her first day, she had called out the teachers on what they were teaching and pointing out every flaw. A few days later, she became a complete failure in combat. Many of the teachers were convinced the young girl had no chance in becoming a ninja.

They were right.

"Sensei! I can't do it!"

A simple jutsu. It was the clone jutsu. Something that could be done easily. Yet something blocked her from using it.

One of the teachers approached the girl, watching her struggle to get it right. The hand signs were correctly done but no chakra was expelling.

"Are you releasing your chakra?"

Katsu pouted and nodded. "I can feel it too! Why doesn't it work!"

The teacher's brows furrowed in confusion. Everything seemed to be fine but the clones weren't appearing. There was another problem. He could barely feel her chakra. He had never noticed her low chakra aura. It was blended with all the strong auras of the clan kids.

"Hmm. I need to talk with your father."

"Huh?"

Katsu had an incredibly small chakra supply. It was so small that a simple clone jutsu couldn't form. She had figured this out when trying her other jutsus. Nothing worked.

"What are you talking about? I'm a shinobi! She should have a big enough chakra supply to do at least one clone!"

Her father's shouts echoed through the empty house. The teachers had told him about her small supply of chakra and he was furious. He seemed to take it as an insult to himself.

"This is an uncommon case but it can happen. Especially because her mother was a civilian."

The mention of her mother made Katsu flinch. Her father never liked it when her dead mother was mentioned. She could feel the killer intent from her father. Her body shook as she listened closer.

Her father took a breath and sighed. "Alright. Thank you."

The Ninja soon left the house. It was quiet again. The silence did not comfort Katsu.

"Katsu."

Katsu looked up to her father. Her hands still shook from the killer intent. His stern angry face didn't help either.

"You're still becoming a ninja."

Academy was hell. As the students got older, they got better. Katsu's improvement went to a complete stop. Spars were not enjoyable and she came back bruised and broken. The students didn't help for they ridiculed her for her bad grades and bad fighting skills.

Katsu made sure not to let it get to her but it was hard sometimes. She just wanted to punch their faces but she knew they outmatched her. All she had were her words, so she used them.

"Awe, look at poor Katsu. At the bottom of the list again."

Kids laughed. It was a normal thing to do the 'laugh at Katsu's failures'.

"Poor you for thinking you have to ridicule the worst person to make you feel better."

Katsu's voice was sharp. She glared at the bully before turning around and walking away.

Going to the academy was bad but coming home was worse. Her father had tried to teach her on taijutsu. Sadly, her motivation had drained out and teaching her was like teaching a rock.

After the rough beating from her father, she heads straight towards her room. It was the only place she enjoyed. It was quiet and peaceful. Her tools were there and machines. She played around with magnets and robots. It was more fun than being a ninja.

Of course, getting the items needed to make these robots and tools weren't easy. Her father had nearly broken her robot when he figured out her side projects. She had to keep these a secret.

And so she did.

Searching through trash was not fun. It smelled bad most of the time and she usually didn't get what she needed.

But one day, a certain man took pity.

"Hey, kid."

Katsu poked her head out of a box. The man had a beard with a red apron. He was quite tall and wore glasses.

"Oh. Hi."

She turned back into the box, looking through the trash.

"Kid, whatcha lookin for?"

Katsu huffed. Couldn't she get some peace for once?

"Metal. Specifically Aluminum."

The man raised an eyebrow. Why would this child be looking for some metal?

"Why you need it. Is it some project of yours."

Katsu huffed and tilted her head.

"You can say that."

She continued to search through the trash, ignoring the man who watched her.

"Well then. How about I getcha some. I own a weapon shop so I suppose I can supply you with some. Don't want you diggin through the trash."

Katsu's head shot up out of the trash bin.

"Yes please!"