Shinobu mentions to the other Hashiras that Giyu has a slutty man waist-, which is funny since they never realized or seen it- pick who you want to be then we may begin!

1: Gyomei 2: Sanemi 3: Giyu 4: Obanai 5: Muichiro 6: Mitsuri 7: Tengen 8: Rengoku 9: Shinobu

(Age: Gyomei = 27, Sanemi = 21, Giyu = 21, Obanai = 21, Muichiro = 14, Mitsuri = 19, Tengen = 23, Rengoku = 20, Shinobu = 18)