In Echo's mind, the honorifics just come with the individual, so she doesn't see what about that changes their circumstances. It's certainly not a requirement to her to use them, she's just used to doing so for most people. But she called him Break-sama before, so for the time being, that's what it is.

"I see." She hadn't had a chance to ask yet, but she'll never complain about getting information. "It is certainly more efficient to minimize transactions to a single individual for items with diverse functions." As in, just one person buying ingredients, but it's always better to specify, right?

Considering everything he said, however, she quickly adds, "You selected your own duty?"