How was I supposed to know what it was?!

[ Okay, even he's not dense enough to mistake a personal diary for a printed book of some kind, but he couldn't come up with a better excuse right now. Asch shifts to watch his fingers trace the journal's edges and avoid having to make eye contact. There really wasn't much point in delving into either of their histories when the likelihood of him staying was low. ]

...it doesn't matter. You wouldn't understand, and if you did, there would be no benefit.