Goshuushou-sama Ninomiya-kun
Info: http://www.mangaupdates.com/series.html?id=10721
It's a shounen light novel, and it's pretty good. There's an anime for this too, but unfortunately, the anime was a tad low budget, but in case you're interested, the light novels are kanon, the source.
The plot goes something like this.
It's a hectic day for Ninomiya Kungo, but it's normal for him. Sexually haressed by the girls, he escapes, only to find himself under attack from hurling balls and weights falling from the sky, he doges them all (military+ training from his sister). Only to fall into a dug up ditch. Seems like everyone likes to haress him. A military chooper appears, dropping this cute girl onto him. Turns out it's his job to protect this girl, Tsukimura Mayu. Not only that, she's a succubus, and unconsiously attracts the opposite sex. Problem is, she can't control her powers, and on top of that, she has androphobia(fear of men)
(This is a brief summary from the anime, and the anime has teaked some minor and major things, so its not entirely accurate)
Pictures:
Novel 1
Spoiler! :
Japanese. Currently Unlicensed. Also, apparently it has won the Fantasy Novel Grand Prize in Japan in 2004. Currently scavenging for raw.
