He goes to your grave and tells you how his day went. He stays at your grave for a long time he doesn't care if it's night time already. Still smiles but gets irritated over the smallest things. He tries to hide his emotions from the other hashira but they know because how puffy his eyes are from crying secretly. Zones out a lot ever since your death. He doesn't vent towards anyone he only vents to his Crow. When he's making food he'll place a plate in front of your seat and pretend you're there