A scan from the 17th volume of Sekirei, releasing on March 25, reveals that the ecchi harem series will complete at 18 volumes.
Created by Sakurako Gokurakuin, the manga began serialization in seinen magazine Young Gangan in June 2005. Volume 16 was published in June 2014 and ranked #15 on Oricon's weekly manga chart.
In Summer 2008, the manga was adapted to a 12-episode TV series. A second season, titled Sekirei: Pure Engagement, followed in Summer 2010.
Source: Scan via ANN
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