"Watch the experienced one do this, please."

Shinobu said in a sweet voice, but it was an obvious front from her bluntly making a snarky comment. She was your companion in this mission, since you two were both quite skilled in fighting demons. However, since she was here longer than you, she tried to boss you around and mock you for being a lower class.

That is the reason you two hated each other. She quickly slashed the demon in the open, while you scowled at her.