It seems plain from recent episodes that 一騎当千 Great Guardians / Ikki Tousen, already well known for buxom characters, is set on seizing the crown of premier breast anime from the most recent holder, Kanokon (though Kanokon may already have been beaten, as its exposure relies on DVD releases, whereas Ikki Tousen manages to air their oppai). Yuri elements also feature.
Although several heavily censored editions have aired (with the usual device of regional physics), a number of stations (AT-X is consistently mentioned) are happily airing it completely uncensored, and as you can see below, there isn’t much left for them to reveal in their DVD releases.
Just how will Kanokon reclaim its hard won crown? Well, for one thing, Oppai Tousen’s characters are almost comically overdeveloped, whereas Kanokon can at least boast reasonably proportioned characters… Still, perhaps this is just a question of taste?