Rengoku survived the infinite train!

Rengoku had fought against the Upper Moon Three, Akaza.
After the arduous battle, Rengoku was severely injured and fell into a coma for eight months. During those months, Rengoku remained resting at the Butterfly Mansion, where you were helping Shinobu and the young girls who assist her.
After eight long months, you were walking through the halls of the mansion until you noticed movement and the sound of sobbing coming from Rengoku's room.
Rengoku: "Now, calm down, young Kamado, I am better than ever!" he said, accompanied by one of his energetic laughs. It turned out that Rengoku had already awakened, and Tanjiro hadn't shared the news because he was too busy clinging to Rengoku on the recovery bed.