Though framed as getting acquainted, the real purpose was to plant seals on them.
If mere surveillance were the goal, Hiatohi probably wouldn't have been dispatched—sending a few more sensory-type ninjas would have sufficed. But if trouble arose and required a swift intervention, she was the only one capable of handling it.
She took a tour of the kitchen. Originally, a buffet had been planned, but considering how impractical that would be, Hiatohi changed it to a quick-service setup: one meal per person, allowing her to stamp the seals onto the soles of their shoes as they stepped up to collect their food.
Chapter 225