"That really was a fine idea, Orochimaru."
Tsunade could not contain her delight as she praised him. This was their first successful case after so long experimenting. Even when the test subject had exploded just now, the blast had been confined to his arm, while vital areas such as his internal organs and brain had remained very stable.
"It looked like there wasn't enough serum. It seems we'll need a few more experiments with the injection ratio. Perhaps it has something to do with the cells, too. Orochimaru, I'll leave this fellow to you. If he passes the next tests, teach him to extract chakra and try learning Wood Release ninjutsu."
"If he can learn Wood Release, that will be a good thing for Konoha, too."
Before she had finished speaking, Tsunade left. She planned to find Karn, both to report the good news and request more Extremis Virus Serum.
After Tsunade left, Orochimaru gave a few hoarse chuckles. He would certainly test Wood Release, but he would not hand this man over to Konoha. If the test subject really could use the Wood Release kekkei genkai, Orochimaru would kill him once he successfully used Wood Release.
Their collaboration with Karn had not yet reached its end. Tsunade was taking too much for granted. By doing this, she would only sacrifice Nawaki's future.
Tsunade's Medical Ninjutsu did indeed provide a crucial boost to their research into the human body, but her emotional intelligence was too low. Orochimaru had no choice but to handle the cleanup, or their collaboration could very well run into trouble.
Within a few days, Karn received the news, but he did not return immediately. Only after dealing with the matters at hand did he set off for the Experimental Base.
About five days passed. When Karn