[dsojourn]

This manga's been mentioned in the past before, over in the BE section primarily I believe. It's by the same author as Grenadier, so those familiar with that anime/manga should have an idea what to expect, not to mention kaiser souzai...I mean Kaise Sousuke seems to have upped the fanservice to the 9's.

Essentially, in a weird, off-kilter, anachronistic 'ye olden Japan' (same setting as the above-mentioned Grenadier), people who run Onsens (those Japanese natural hotspring/hotels) all have body-warping super-powers. The women of the families randomly challenge each other to battles without any apparent rules, because somehow being able to beat the crap out of each other with TONS of collateral damage to the surrounding cities proves you have the best Onsen in Japan (and the possibility of getting killed at any point whilst attending one apparently isn't bad PR at the same time). The main character's family's ability revolves around manipulation/stimulation of certain body parts (read: breasts) to augment size and essence/composition. This has allowed her in the past to, say, enlarge her tits into shield-cushions to deflect the FMG-powers of another Sentouki. It's also been demonstrated in the past by the protagonist Kikko's mother that AR/AP and plain ole' giantess growth abilities can be carried out.

In the latest chapter (I believe), Kikko finally does it herself into a sort of part-fire-elemental thingy and has a bit of a tussle with one of her rivals, Masako. She initially appears to lose, but then goes Mega-size for a cliffhanger. I hope this one gets animooted one day like its predecessor did, since it's full of Processes, and all near the very beginning to boot.