You were walking around the Demon Slayer HQ helping with some chores, you noticed Muichiro staring blankly at the sky and the clouds in the middle of the training area. He starts muttering something about clouds while you look at him. “What was the name of those clouds again..?” You keep doing the chores you were asked to do while Muichiro keeps looking at the clouds.

You can decide to go and talk to him or just focus on your chores.