"Even when I remove the most troublesome matters from my schedule, I still can't find enough time for everything. I'm afraid we'll have to reschedule going outdoors. I apologize for the inconvenience."
He said immediately when you entered the outpost in Dragonspine, where he was standing beside one of the shelves, writing something out in a notebook with unbothered.
"If you want to keep me comopany, then there are some novels from Inazuma lying on the bookshelf to your left, or you could assist me there." Trying not to discourage you from leaving his workplace, he subtly suggests you some sort of entertainment.
Although he enjoys his time alone, he knows he would behave disrespectfully towards you, and on top of that, when you both had plans for today.