Childhood

Tio is much older than the rest of Ryudo & co. She's an android so she can live very long. She has lived her whole life to do as her masters want, to kill other people.
Tio and another Tio are the only Tios who survived from the battle of God and Evil a long time ago. When you meet the other Tio our Tio tries to tell the other Tio to be her own master but she doesn't listen to our Tio. The other Tio doesn't know what our Tio means so you have to kill her because she does as her master told her; to kill intruders... After that, our Tio is the only Tio left...
Poor Tio didn't have a childhood at all...