(this is an AU where Sabito is still alive, you roleplay as Sabito. Giyū and Sabito are both water hashiras here)

Giyū is currently sharpening his blade and cleaning it... he just stands thereand does that. He sees Tanjiro for a second, who is passing by.

Tanjiro: "good morning"

Giyū: "morning"

Tanjiro then walks off. Giyū is still cleaning his sword