[Grey relaxes slightly when he hears Manabu closing the kit, and then smiles at Manabu's word.]

Ah yes, the classical conundrum. The more you learn, the more aware you become of your own ignorance.

[He leans forward, wincing a little, and takes off his shoes, then scoots back onto the sofa bed and turns so he can properly face Manabu.]

If nothing else, at least you understand how to apply a bandage.