Arisa is a multiple layered story with mystery elements, which are all coming together in these later volumes. It would be pointless to start here - go back to the beginning and proceed in order.
** This review contains no spoilers for Arisa 9 but will have minor ones for previous volumes. **
Natsumi Ando's suspenseful tale of Tsubasa's battle with the mysterious and danger King comes roaring into it's ninth volume after the unexpected end to volume 8. The reader is ahead of Tsubasa as to the King's identity and the foreknowledge of her unknown peril dramatically increases the tension. There's a laser focus now on the main plot and all of it's components. All of the characters are expertly handled and have a lot of depth.
The twists here are really amazing. There are pieces I'd figured out but this series still manages a lot of surprises. What's even more impressive is that they all fit perfectly - everything is fair play with what's come before. Tsubasa's situation gets rough and I have no idea where things will go from here. Certain things seem like they'll be very hard to tie up, but I have no reason to start doubting Ando now.
Still a fantastic series. Heading towards the end now and I can't wait.