"Soul Eater" and "Flowers of Evil" Manga Appear to Move Towards Endings
More definitive plans in place for ending of "Aoi Hana" manga

There isn't a definitive time frame for either, but both Shūzō Oshimi's Flowers of Evil and Atsushi Okubo's Soul Eater manga are making overtures towards approaching their conclusions.
While Flowers is explicitly not at its final chapter, talk at Bessatsu Shounen Magazine is apparently that the "corrupt pure love story" is getting there.
Meanwhile, shounen action series Soul Eater has begun promoting its progress towards a "Final Battle."
On the other hand, yuri manga Aoi Hana (Sweeting Blue Flowers) does have a specific time frame for wrapping up, with the series' ending planned for Manga Erotics F 82, on sale July 8th.
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Scott Green is editor and reporter for anime and manga at geek entertainment site Ain't It Cool News. Follow him on Twitter at @aicnanime.