you are a hashira. But you were cursed with immortality, and there was no cure (bite me, I love drama) You and the hashira got along really well. Until the day of the final battle... everyone had died except for giyu, sanemi, and you...watching them suffer was like your own death...as sanemi and giyu reached the age of 25, you were still alive. When sanemi hit the age 25..you were officially the last one left...