Ayaki Yuriko is a 23-year-old girl with a strong personality. She has been skipping classes and hanging out with delinquents since middle school. In high school, she dropped out and cut off ties with her family, living a aimless life.
During a street fight, Ayaki's group unknowingly offended a gang controlled by Bai Yaxin. The consequences were devastating. Ayaki never saw her group members again. But because Bai Yaxin recognized Ayaki's exceptional execution skills and cold-blooded mindset, Ayaki was kept by his side and given the codename "Yuhu."
When Ayaki was still a girl, she did not have the trait of "rationality." She only had strong execution skills and a cold-blooded nature. So, when she felt that school did not suit her, she could skip class, skip school, and drop out without any hesitation or fear. When she felt that her family was not right for her, she could leave without looking back, cutting off the blood ties with her family, not just like in a teenage drama, but more decisively.
Of course, this personality, or rather, characteristic, did not bring Ayaki a bright future. Instead, she ended up being an outcast, a social trash. She had no education, no skills, and not even a supporting family in the background. In the eyes of others, Ayaki Yuriko was simply a burden to society, an unstable element that couldn't bring any value to society.
During this time, Bai Yaxin, who accepted Ayaki, might have had a sense of gratitude if it were someone else. But Ayaki Yuriko was different. She was a cold-blooded person and would not forget the fact that Bai Yaxin had killed the other members of her organization.
Revenge? When this thought appeared in Ayaki Yuriko's mind, she found it ridiculous that she would entertain such an idea. She had a rare place to stay and a source of income, so why would she destroy it herself? As for those former "companions," their friendship was not precious. They were just a group of delinquents waiting to die together. The opportunity to live a better life had come, and she had to seize it.
At that moment, Ayaki Yuriko's characteristic of "rationality" awakened, along with her "execution skills" and "cold-bloodedness." She established herself as "Yuhu" under Bai Yaxin and earned a position.
And now, Ayaki Yuriko is in a hospital, in the same hospital as Koga Shirayuki and Koga Mizuo. In the mission executed by Wolf Spider, there was a double insurance that Wolf Spider did not know about, and that was Ayaki Yuriko as Yuhu. She always observed the development of the situation from the periphery and decided how to act based on her autonomy. Her conclusion was that Wolf Spider was dead, and it would be a high-risk move to break into the scene. The wise choice was to strike in the hospital.
Based on Ayaki Yuriko's judgment, when Koga Shirayuki arrived at the hospital, her life was already hanging by a thread. What Ayaki did was to add the final straw. Faced with the situation where Koga Shirayuki was rushed into the operating room as soon as she arrived at the hospital, Ayaki Yuriko thought for a moment and then infiltrated the hospital's power room. She checked the main power system and backup power interfaces one by one before cutting off all the power sources in one go.
For regular surgeries, a short or even medium-length power outage could be handled by the experience of the lead surgeon. However, for the rescue operation of Koga Shii, this power failure would be fatal.
After completing these tasks, Araki Yukin even did not bother to check the condition of the operating room, but chose to leave the hospital directly.
In her opinion, the death of Koga Shii was already a done deal, and even if she hadn't died, it was not her responsibility. For her, the only thing left was to report to Bai Yaxin.
