Ambush

The transplant surgery went very smoothly. Although it took quite a long time, Tsunade perfectly exchanged their circulatory systems and, while she was at it, transplanted a new Ibuse venom sac into Shin.

Relying on her superb chakra control and professional medical knowledge, Tsunade used chakra scalpels to precisely separate and transplant their circulatory systems before treating them with Medical Ninjutsu. Once the operation was complete, not even a wound remained.

Nawaki could achieve this level of chakra control as well, but asking him to locate an entire circulatory system amid the complex internal tissues was extraordinarily difficult. Even if he found it, he would not have been able to complete the operation within the required time.

Therefore, this transplant surgery could never have succeeded without Tsunade.

The surgical wounds had been perfectly healed by Medical Ninjutsu, so the two could get out of bed and walk freely once the operation was over. However, due to the massive blood loss and the time their internal organs needed to adapt to the new systems, they needed a period of rest and could not engage in strenuous activity.

Of course, their daily activities were completely unaffected, so Yahiko continued carrying out his inspection work in Konoha as usual over the following days, without arousing anyone's suspicions. Other than the few people involved, no one knew that a surgery capable of changing the entire Shinobi World's balance of power had taken place that night.

Yahiko remained in Konoha for another full month. During that time, he recuperated while finding time to study Hanzo's secret techniques.

Shin's circulatory system allowed for much more precise control over the venom sac. During this period, Yahiko did not suffer a single accidental venom leak. He could interact and converse normally with everyone, and unlike Hanzo, he did