Where a female Bisco falls out off a parallel dimension and now she, our Bisco, and Milo have to fight the Rust god, called Rust. Or Lord Rust. Not to be confused with the Rust Lord, Kelshinha (except it isn't really Kelshinha in this case).
Two Biscos mean twice the chaos and somehow the story's also twice as faced-paced as usual, although still pretty straightforward, despite the dimension-hopping. Even Pawoo gets to do some things. Ends on a cliffhanger, so now begins the wait for volume 10 to be out in English.