Under the stimulation of Kaidō, the Saketsu and Hakusui, which had been temporarily suppressed by drugs, were reactivated.
Nota: (Hakusui is the power plant (it generates power. Saketsu is the main switch (it releases and controls that power).
A continuous stream of spiritual pressure flowed into the spiritual core.
Sora and Rii Hoshino observed quietly for ten minutes and found nothing unusual.
"Professor, was the spiritual core replacement surgery a success?" Rii Hoshino asked in confusion. She looked at the spiritual body status data on the instrument and saw nothing abnormal.
"There's nothing abnormal for now, but we still need to observe for a while longer." Sora looked at the data on the monitoring instrument and continued, "First, suture the incision. After suturing, we'll observe for two hours before waking her."
Sora began to suture the post-operative incision, then used Kaidō to accelerate the healing process.
A moment later, Shizuku Saitō's skin was as good as new.
The two did not wake Shizuku, instead observing her various vital signs through the instruments.
"Saketsu is normal..."
"Hakusui is normal..."
"Spiritual core is stable..."
"Spiritual pressure fluctuation deviation is within the controllable range..."
"Heart rate is low..."
Rii Hoshino recorded the data for each indicator every ten minutes. This data would serve as an important reference for customizing Batsu'unsai Katori's treatment plan.
Shizuku's condition was relatively stable, with all data within a manageable range.
Two hours later, Sora breathed a sigh of relief. Shizuku's spiritual body had not developed any major problems.
"Professor, the anesthetic reversal agent is prepared."
"Wake her up."
"Understood."
Rii Hoshino injected the newly prepared reversal agent into Shizuku Saitō's spiritual body.
The data displayed on the monitoring instrument changed immediately.
Rii hurriedly recorded the changes:
"The rate of spiritual pressure generation from the Saketsu and Hakusui is rapidly increasing..."
"Spiritual core is stable..."
"Spiritual pressure fluctuation deviation is abnormal..."
"Heart rate is abnormal..."
"It's likely her Saketsu and Hakusui haven't adapted to the new spiritual core, causing rejection and stimulating them." Sora identified the problem and immediately placed his hands on her Saketsu and Hakusui, using a Kaidō technique to guide the excess spiritual pressure out of her body.
At this time, the reversal agent had spread throughout Shizuku's body, neutralizing the effects of the potent anesthetic.
Shizuku Saitō gradually regained consciousness.
"Am I... alive...?" Shizuku asked groggily.
"Don't worry, the spiritual core replacement surgery is complete. Miss Shizuku, please remain calm and control the spiritual pressure in your body," Sora said gently.
"Miss Shizuku, please drink this medicine. It will help you clear your head." Rii Hoshino stepped forward and handed the prepared potion to Shizuku.
After drinking it, Shizuku's mind quickly cleared.
"Why can't I control most of my spiritual pressure?" Shizuku felt something was wrong with her spiritual body and asked in surprise.
"There are no major problems right now, but you need to adapt to the new spiritual core." Sora didn't stop the spiritual pressure guidance technique as he explained, "First, follow my guidance and try to control your spiritual pressure."
"Okay..." Shizuku could sense a spiritual pressure within her that didn't belong to her. She tried to follow its guidance to perceive and manipulate it.
Gradually, she found that she could control the spiritual pressure within the spiritual core.
"I can control my spiritual pressure again!"
A look of pleasant surprise appeared on Shizuku's face.
Sora nodded and instructed, "Very good, remember that feeling."
"I just used a Kaidō guidance technique to help you clear the pathways to your spiritual core."
"From now on, you'll need to keep doing this until the rejection reaction from the spiritual core is completely eliminated."
"Due to the limited time for prodeuce the Reigai, the quality of this spiritual core is still far inferior to your original one."
"This spiritual core can probably withstand spiritual pressure of a tenth-rank level."
"You need to be careful for the next few years. Don't deplete the spiritual pressure in the core, or it will stimulate your Saketsu and Hakusui."
"If your Saketsu and Hakusui go out of control, your spiritual core might not be able to handle it. After all, their level of development far exceeds that of the core."
Shizuku was originally a sixth-rank, a high-ranking seated officer nearing the level of a vice-captain.
The current spiritual core was taken from a Reigai with a tenth-rank spiritual pressure. The strength difference was significant. If her Saketsu and Hakusui were fully activated, the released spiritual pressure would likely be too much for this core to bear.
Shizuku nodded repeatedly. "It's good enough that my life was saved. Being able to maintain a tenth-rank level is an unexpected bonus!"
Shizuku's condition seemed good, but she still needed a period of observation.
Sora let Akane Saitō, who was waiting outside, come in and told her the surgery was complete. "The spiritual core replacement surgery is finished. Miss Shizuku's condition is quite good right now."
Akane said gratefully, "Thank you so much! If there is anything Katori-kun needs help with in the future, the Saitō family will do everything in its power to assist!"
"Rest well during this time. I will come to check on your condition every day and will prescribe some spiritual pressure-suppressing medication to help you better adapt to the new core." Sora turned to Rii Hoshino. "You happen to be off duty during this time. Stay with Miss Shizuku and record her spiritual body's status every hour or two."
"Yes!" Rii Hoshino agreed.
That night, Sora returned to the laboratory and had Aizen Sōsuke dispose of the failed Reigai.
"Professor, what should we do with the remaining Reigai, Shizuku Saitō Number Four?" Aizen asked.
During this period, they had used the spiritual body growth agent to mature Shizuku's Reigai, successfully cultivating two that did not develop hollowfication mutations.
Sora had chosen the one with the stronger spiritual pressure to replace Shizuku's core.
The other Reigai was still in the life-support tank, awaiting disposal.
"Number Four is only at a twentieth-rank level now, right? But it's still a seated officer's Reigai, so its growth potential is slightly greater than that of an ordinary Shinigami's." Sora thought for a moment and said, "Change the dosage of the growth agent to the normal amount and continue cultivating it. We can use it for hollowfication experiments in the future."
Sora had a feeling that even with the Soul King fragment, the hollowfication experiments would not go smoothly. It would likely require a large number of Reigai to see even a little progress. The more usable Reigai, the better, so he decided to keep this non-mutated one.
"Understood." Aizen Sōsuke nodded and modified the growth agent dosage on the life-support tank's data card.
Three people used this laboratory, so every operation had to be recorded so it could be checked at any time to prevent errors.
Just then, Sora's Hell Butterfly relayed a message.
Sora took it out and found that Director Kotetsu was contacting him.
He immediately had a bad feeling.
Under normal circumstances, Director Kotetsu would not contact him at this hour.
Sora quickly asked, "Director Kotetsu, it's so late. Is there something urgent?"
Ayane Kotetsu's voice came from the device: "Professor Katori, there's been a problem with this year's graduation assessment. Please, on behalf of the Spiritual Arts Academy, go to the Dangai and confirm the situation!"
...
The day before, Kakyō followed her supervising instructor and the Shinigami from the Kidō Corps to the Dangai.
Her graduation assessment mission was to accompany the Kidō Corps to the Dangai to handle and repair an anomaly in the spiritual particle barrier.
The Kidō Corps examiners would assess her mastery and application of Kidō knowledge during this process.
"Kakyō, I'll first familiarize you with the Dangai's spiritual particle barrier," Instructor Sakai said seriously. "You must pay close attention. The Academy doesn't cover this topic much, so it should be beyond what you've learned. You need to get familiar with the barrier quickly to avoid embarrassing yourself in front of the Kidō Corps examiners."
Kidō wasn't just about memorizing knowledge. The examiners wanted to test Kakyō's adaptability and see how much she could learn about the barrier in a short amount of time.
"I understand. I will definitely do my best!" Kakyō nodded with confidence.
Over the past two days, with the help of her professor and Senior Yoruichi, she had researched some materials at the Shihōin residence and had gained a preliminary understanding of the Dangai's barrier. She was confident she could complete the assessment.
Kakyō followed Instructor Sakai, observing and feeling the spiritual particle barrier within the Dangai.
Near the anomaly, some Shinigami from the 3rd Division were standing guard.
Kakyō also ran into her senior from the same dojo, Kana Azashiro.
"Kakyō, do your best!" Kana waved from a distance, cheering her on.
Katori Sora had already notified her in advance to look after Kakyō.
"Ah, it's Kana..." Instructor Sakai chuckled. "I taught her Kidō class back in the day, too."
Kakyō and Instructor Sakai walked over.
"Instructor Sakai, long time no see!" Kana said with a grin.
"It's been a few years, and you've already become a seated officer. You're much more impressive than your teacher!" Instructor Sakai said with some emotion. Katori Sora's disciples from that class were all outstanding and had all become seated officers.
Kana Azashiro, in particular, had already become a high-ranking seated officer, an achievement most Shinigami could never reach in their lifetime.
And Kana had done it in such a short time.
With such strength, her future accomplishments would surely be no less than that of a vice-captain.
"It's all because the teachers taught well! Hehe!" Kana rubbed the back of her head and chuckled sheepishly.
"Kakyō is your junior from the same dojo, right?" Instructor Sakai said with a smile. "Your junior is having her graduation assessment here. You'd better keep a close watch and don't let any Hollows into the Dangai to disturb us!"
"No problem!" Kana patted her chest and assured Instructor Sakai, "Leave it to me! I guarantee not a single Hollow will get in!"
"With a 'seated officer' giving her word, I can rest easy," Instructor Sakai teased. "I have to go. I need to continue showing Kakyō the barrier."
"Goodbye!" Kana waved, bidding them farewell.
Afterward, Instructor Sakai led Kakyō along, explaining the key points of the barrier. "You must remember, as an art that needs to be maintained long-term, the structural stability of the spiritual particle barrier is the most important thing. You remember the three key factors that affect structural stability, right..."
"Reach out your hand and feel this spiritual particle art structure up close... this is the key to maintaining its stability..."
"Its principle is the same as that of sealing-type spiritual particle arts, and it's the most crucial point for this type of art. The Kidō Corps examiners probably won't miss this question..."
The two occasionally encountered Kidō Corps Shinigami who were studying the barrier problem, but they were all focused on their inspections and didn't have time to talk.
It wasn't until evening that the Kidō Corps Shinigami finalized their plan for repairing and modifying the barrier.
They had discovered a previously unknown vulnerability, so their task was not just to repair the barrier art but also to find a way to optimize it.
This would take more time.
After finalizing the plan, the Kidō Corps examiners took the time to assess Kakyō.
"Student Kakyō, please explain this art structure..."
"This art structure is a common one... it is mainly used in sealing and barrier-type spiritual particle arts..."
The examiner asked several more questions, and Kakyō answered them all fluently.
"Very good. Your theoretical knowledge is solid. Next, we will test your practical skills."
The examiners had Kakyō follow them and participate in the work of repairing and modifying the spiritual particle barrier.
Since Kakyō had no prior experience with the Dangai's barrier, her performance in the practical part was not as outstanding as her theory.
However, she had already mastered many Kidō. By applying her knowledge, and after studying the barrier with the examiners for a while, she quickly became familiar with it.
"Student Kakyō's practical skills are also outstanding! Your mastery of Kidō is already good enough to join the Kidō Corps. You've passed on my end!" one examiner exclaimed. "I hear you are Professor Katori's disciple. His teaching ability is truly as renowned as they say!"
"Professor Katori teaches well! But your grasp of the theory shows that you yourself have worked very hard!" another examiner nodded. "I'm giving you an excellent evaluation as well!"
The other examiners also expressed that Kakyō's performance deserved an excellent rating.
"Congratulations, Kakyō, you've passed your graduation assessment!" Instructor Sakai congratulated her. "When you get back, you have to make your professor show off his skills and celebrate. It's been a long time since I've had Professor Katori's cooking!"
"Thank you all for your guidance!" Kakyō said with joy.
"Haha, we'll be colleagues from now on!" a Kidō Corps examiner laughed. "You can't slack off on the upcoming repair work! Think of it as getting used to the job ahead of time!"
"I will take it seriously!" Kakyō nodded.
Afterward, Kakyō, acting as an assistant, followed the Kidō Corps examiners in the work of repairing and improving the spiritual particle barrier.
------------------------
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