An manga just like Rappi Rangai?

Hi guys,
I just read Rappi Rangai(ninja girls) and really liked it, I was hopeing there where more manga just like it with the same things like comedy, harem,ecchi and stuff like that. The only other title like that I think was same was the manga "the world god only knows" that kinda of the same thing. I was also hoping for ongoing titles if possible that would be greatly appreciated! :)

Thanks again! :)