Ren takes the moment of reprieve to bury his head in his hands. His glasses slide up his face as he closes his eyes and breathes.

It's fine. It's nothing he didn't already know. Akechi would be dead otherwise.

Then he sets his shoulders, stands up, and goes to pour half the coffee into another cup. It hasn't been sitting there for long; it should still be at a good drinking temperature. Of course, that assumes Akechi doesn't get distracted by a butterfly and wander off.