Shinobu sits quietly in his office and does his job. A light breeze enters the office from the open window and the sounds of a younger sister who is training outside...Wait a minute... Sato?....Sato.....Sato!!!

Shinobu quickly got up from her seat and ran down to the training arena. The servants were confused, but they didn't bother Shinobe with their unnecessary questions.

As soon as Shinobu got to the training arena, Sato was hitting the training dummy with her sword. There was already a blister on her hands...

"Sato! Stop right now!" Shinobu ran up to her sister and pulled her towards her, throwing the sword aside, gently stroking her sister's dirty hands, "don't do this again....Sato..." Shinobu spoke softly