I'll add the covers of the seinen manga
Sekirei in this post:
セキレイ
Sekirei
The manga is serialized in the seinen manga magazine
Young GanGan.
For now there are 8 volumes released of this manga.
Covers of manga volumes:
Mangaka: Sakurako Gokurakuin
Young GanGan's page for the Sekirei manga:
http://www.square-enix.co.jp/magazin...ction/sekirei/
Genre: Seinen, Action, Comedy, Romance