Yakumo Kurama
Daughter of Murakumo and Uroko Kurama

All three of them are members of the Kurama clan known for their talent in genjustu. Where it just seems to run in the family because it quite literally did in a sense. The family possessed a such a talent for genjustu because they possessed a bloodline limit that allowed one to be such a master of genjustu that they used at a grandmaster level without any proper training. However, the drawback to such a bloodline limit was that while they had the power of grandmaster they did not have the control or the experience of one to properly use all that power. Though it was a unique bloodline limit in that it was a rare type compared to others that were normally common. Thought to be so strong because rather than every clan member having a version of it that can be strengthened over time. Only a few generations does a Kurama clan member awaken this dormant bloodline limit of their family.

Yakumo Kurama was born with a weak body that was unable to do anything other than genjustu. In a sense, she was like the genjustu version of Rock Lee who himself could only use taijustu. However unlike Rock Lee who eventually would get Might Guy to be the support that help him keep his dream alive to become a ninja that only uses one area because they are incapable of doing the others. Yakumo was not as lucky as Kurenai Yūhi could not be her version of what Might Guy would become for Rock Lee.

Because Yakumo was unable to properly control her power it was starting to control her instead. A second personality formed within her based on the growing anger that Yakumo was being trained in the right way. Ido was formed and stewing in the back of Yakumo's mind as she was growing frustrated and annoyed as helping Yakumo should not be that hard for someone that had the experience and control that Yakumo lacked. However, Ido was unaware that Kurenai lacked Guy's optimism thus she picked on her desire to seal Yakumo's power away for that reason.

Ido then woke up with Yakumo's home on fire but it was frozen as well thankful before anyone was seemingly hurt as well.

Though she then felt a slap across her face.

What the hell were you thinking. If I had been in the area this place could have burned to the ground. Who nearly use their power to burn their own home while they are sleeping.

"Huh," Ido said confused.

They looked to see what to them was just a sentient fire that had managed to slap her across the face.

"What are you...what is this I...I..." Ido stuttered.

"I do not think that she did this on purpose as she seems to lack control despite having vast power herself" second voice of the fire stated.

"If she has just vast powers can not she just them to give herself control until she actually learns" the first voice said

"Wait!? You mean to use her powers on herself to make her believe she is under control until she actually is" the second voice states.

"Seriously do you think I can just claim that I am..." Ido says before she reverts back to Yakumo who is now frozen like everything else.

"Guess it worked as she used her own powers not to restrict herself but even seems to have put out the fire she started as well" first voice said.

"That is how I met the fire that saved me, Yakumo, and her dream" Ido states.

"Then how are you able to move at the moment" Yahiko asked

"That simple I have better control now than back..." Ido states before she reverts back to Yakumo who is frozen just like Sakura is.

"Apparently, not enough as she seems to be using her power to control her own power This is her current limit so she was cut off from using it anymore. That still shocking that it worked then and has been working this entire time" Kurama states.

"If her genjustu bloodline limit allows her to make anything she wants to happen with her genjustu. Then if she wants to have control over her own power then your idea of her just claiming she does makes some sense" Yahiko states.

This was the reason why Ido looks somewhat demonic but is not a monster herself as Yakumo's powers were never sealed away and though Kurenai just stopped teaching her. She never stopped trying to be genjustu only ninja. With clan was saved from the fate that would have befall them if the events had gone differently. Ido despite being generated from the id part of Yakumo's psyche. She was not malicious because she was prevented from becoming that way as her focus was set on being helpful to Yakumo. Thus while Yakumo's dream was to be a genjustu only ninja, Ido's dream was to support Yakumo's and unknown to Ido at the moment to pay back the one that prevented her from taking Yakumo down a dark path.