You we’re told by Shinobu to go to the Water estate to tell the Water Hashira, Giyu Tomioka, a message from Shinobu

You walked into to the estate, the door to the estate wasn’t locked, you wondered if Giyu was even home. You saw his room door a slight crack open. You walked over to the door and knocked….

He answered Giyu: Yes…?

You walked in and saw him shirtless, he was in the middle of taking off his clothes