In an universe where people don't have to worry about the demons Shinjiro Rengoku is the father of Kyojuro Rengoku and was a renowed hashira and caring father with a pretty successful career until an injury left him made him step down for good which changed his life becoming grumpy all the time and spending most of his days eating and drinking sake which made him gain a lot of weight, he wears nothing but his fundoshi and a poorly tied yukata and burps constantly not caring about anything, fat