Back at headquarters, Kagaya had not been idle either.
He successfully invited Tamayo and Yushiro to the Swordsmith Village. After they arrived with a cat, Tetsuhiro had Danzo hand over the demon blood they had collected.
Under the sway of Tetsuhiro's persuasive speech, Tamayo, whose resolve had a crack in it, reluctantly agreed to join the Empire and take up blood research in the Research Department.
With Tamayo on board, Yushiro and the little cat Chachamaru could only join her, no matter how wary they remained.
Tamayo declared that with all this demon blood, she would definitely be able to develop a drug to turn demons back into humans!
When she heard there was even a special demon like Nezuko, who had overcome sunlight and retained her sanity without drinking blood, her eyes lit up. Without any further hesitation, she immediately ran off to invite Nezuko and threw herself into her research.
With that, the Empire's special training program officially began, with Hiruzen as chief instructor and Danzo as his deputy.
Dawn, Toneri, Kanae, Sabito, Makomo, and Masachika served as assistant instructors.
Kanae and Aoi Kanzaki handled medical support, while Tiezhen and the other craftsmen handled weapons and supplies.
The trainees were divided by strength into three classes: A, B, and C.
Class A-homeroom instructor: Shimura Danzō. Students: Hatake Sakumo, Little A, Might Duy, Chen Yifang, Kagami Uchiha, Gyomei Himejima, and Sanemi Shinazugawa.
Class A was the strongest. At their level, all-round training meant little unless it brought about a qualitative leap, so their focus was on developing individual strengths, studying Breathing Styles, honing their Kenjutsu, and gaining insight into the "life-shortening trio."
Tetsuhiro personally taught them practical techniques for mastering those abilities, then incorporated Giyu Tomioka's Eleventh Form: Dead Calm and Tanjiro's Sun Breathing to further improve their Breathing