Daidoji Nazoko

At the age of 15 she had her gempukku and not long after she followed her sensei to kill and Ogre terrorising villages in the nearby area. When they got there they were ambushed buy 3 ogres and her sensei was killed immediately.

It was now that Kuni Mokuna arrived and saved her life by killing all 3 ogres.

After this she became Mokuna's apprentice and followed him for the next 20 years. (Crab p. 14)