Shihōin Naraku walked out of the laboratory and glanced back, his gaze sweeping over the guards stationed around it, both in plain sight and hidden.
These guards were not merely there to protect the laboratory and keep others from wandering in.
More importantly, they were there to prevent unexpected incidents inside the laboratory.
It was easy to imagine how troublesome and dangerous Tsunade's current experiments were, so putting safety measures in place beforehand was necessary.
Of course, under normal circumstances, the chances of an accident were not that high.
This was all just in case!
"At the rate Lady Tsunade's experiments are progressing, could Jiraiya end up missing the Fourth Shinobi World War altogether?"
It was genuinely hard to say.
Compared to Orochimaru, Tsunade had one very obvious disadvantage.
It was not that there was a huge gap in their research abilities. Even Orochimaru considered himself inferior to Tsunade when it came to her talent in medicine.
The key was that Tsunade was not as ruthless and cruel as Orochimaru!
Experiments involving Hashirama cells required test subjects.
Orochimaru never lacked test subjects. Once his supply was used up, he would send people out to capture more. Whether ordinary civilians or ninja, he could have them brought in.
If necessary, Orochimaru would even go out and capture people himself.
But Tsunade could not do that. Forget experimenting on ninja; she could not even use ordinary civilians as test subjects.
Orochimaru had already done something like that once in Konoha.
For Tsunade, the former Hokage, to dare do the same would be utterly reprehensible.
If word got out, it would deal a serious blow to the reputations of both Konoha and the Hokage.
Tsunade did not care about her own reputation, but when Konoha's and the Hokage's reputations were involved, things became