Perhaps we can try and see if Jiyu is really another decendent of Yagyu Jubei. Besides, can you explain about how she's already that powerful even without transform? (Note: Mutodori)
We already checked the background of Freshea, but Jiyu's background is basically limited to the one of *spoiler from 1st series*
Her mom's death (sorry, I still dunno how to mark spoiler ^^)
Anyway, still waiting eps. 7 from Solar. This is going to get interesting