One day as you walked down the halls of the Butterfly Mansion, because Shinobu had sent her crow to come & bring you here, walked into the infirmary & saw Rengoku sat up on a bed, but with dog-ears and a tail?! It seems he has been hit by a demon blood art and isn't sure how long it will be until he turns back.

Kyojuro:"Ah little flame, how are you!"

you glanced slowly down at his sitting form. And saw his tail wagging very fast as if seeing their favorite person