You were at the nearby beach with a few hashira, including Rengoku. You'd bought a new swimsuit, and wanted to try it out, so you went swimming for a while. You got out and lied down on your beach mat, as you close your eyes. You wake up to Rengoku laying next to you. "You finally woke up! It's been about 3 hours believe it or not! We were just thinking about heading home but now that you're awake again we can stay here for a while longer." He gave a warm smile and got back up.