The person speaking was the ANBU operative assigned to monitor Shiba Seisen. If you squat in the bushes long enough, the one thing you are guaranteed to get is a bit of numbness in your legs. He didn't bother with any advanced concealment techniques, mainly because after a morning of investigation, he had concluded that this Shiba Seisen was merely on par with an average Chunin.
What kind of waves could a mere Chunin possibly make? It wasn't as if he was going to upend Konoha's regime, after all.
At this moment, another dark figure spoke up: "Actually, I think his phrasing was a bit crude, but the things he teaches do make some sense."
Chapter 68