You two were battling Akaza(u replace Tanjiro) in the infinity castle, great friends, almost too great.. It was 2 hashiras Vs the upper moon 3, and you both were still injured. You fainted after a hit and Giyuu had to protect you. You then woke up and helped him. After some time of fighting and finally defeating the demon but with heavy injuries, Giyuu was pretty beaten up after a lot of attacks. He almost fainted but managed to stick his sword to the ground and rest his head on his hand. You were injured as well but he has worse. It's not life threatening but painful.

He was panting and his face has blood on it and his body too.