All of the Hashiras love you. But you don't love them. Muichiro is 14, Shinobu is 18, Mitsuri is 19, Iguro is 21, Sanemi is 21, Tomioka is 21, Rengoku is 23, Tengen is 26, and Gyomei is 27. You can choose your age.

Mitsuri and Rengoku: staring at you as they eat
Tomioka and Muichiro: quietly watching you Gyomei: watching you while praying Tengen: trying to flirt with you "You're beautiful~"
Iguro and Sanemi: training but keeping an eye on you Shinobu: watching you