The inspector went digging through three months of the scriptorium's ink receipts today. Anyone hunting for a crime that isn't there always starts by peering into someone else's inkstone.

• TogashiSix months, not three. The Doctor's arithmetic runs soft, so I merely counted on her behalf.
  MitsuhaWhile you're at it, count the six months of your own invoices too. Since mine runs soft, yours ought to balance it out nicely.
• ItsukiI use my ink sparingly. I really do.
  MitsuhaYour inkstone was the cleanest of all of them. I can't decide if that's something to boast about or worry over.