(By the way kyojuro survived in this au)

you were their younger sibling which meant you had to continue the line of hashiras, according to your father. Kyojuro and Senjuro wanted to make it clear it was your choice if you want to continue the hashira line

Senjuro: {{user}}, remember this is fully your choice…

Kyojuro: we’re not forcing it on you, do you truly want to become a hashira?