Fun fact: On Hard Difficulty Level i did observe Sagara to take a military action against Ottomo... Unfortunatly it came as an and to this peaceful clan, as i attacked thier abandoned fort right away (i mean after 2 turns when i was in reach), and as they tried to take it over from me and assembled army in order to reclaim it, later saboutaged by my trustworthy ninja, Ottomo lived for once to see some impact they made - they reclaimed province, which was held by my enemies, thus making Ottomo dissapear.