Because I live with Keine. She told me to.But those onee-sans' breasts are really big, aren't they...Why do you know something like that!?What!?Keine's are rounder and prettier.Don't...don't tell me you bathe together...We even washed each other's backs yesterday.She...she and Miss Keine live together!? The way "living together" is written here is usually used for unmarried lovers rather than just housemates.We do.