Now this was a fun one. What's interesting is how it's a Yuri Harem Comedy while also not being a full Yuri due to the fact that our main Hero/Heroine Natsuru Senou is a guy who is a Kämper (Girls with special powers whose only job is to fight each other) so he has girls coming after his Girl & Guy form. So only a Girl can be a Kämper so you might ask well how can Senou be one if he's a guy, well he has a bracelet that fully transforms him into a girl at random for random periods of time (at least at first) however this alternative Kämpfer version of him is extremely popular with all the girls at school many of which just declare their love for her straight away.
This leads to a lot of the comedy as Senou has to navigate through these would be lovers while also fighting enemy Kåmpfers as well. Things start rough when one on the Schools idols (Who Senou has a crush on) falls in love with his Kämper form & while in female form during break (In his female form) with his school president (An enemy Kämpfer) spews out that he is dating his male form. Of course everyone doesn't know they are one & the same & then become outraged at this & continue to fight for his Kämpfer forms love. Confusing right, well don't worry as it only gets weirder, thats just a summary of the first few episodes. My main complaint is kind of a complaint but not really as the main Kämpfer plot gets lost for much of the show (except for the final few episodes) as it focuses more on the Romantic Harem side of things, but if you like that type of show (as i do) then you can look past it.
There's also some Fan Service but don't expect anything as extreme as something like Senran Kagura but it's there & it's still saucy at times, especially considering this released all the way back in 2009. But overall despite the main premise disappearing much of the time, it's a fun (if not generic) Romantic Comedy with a bunch of cute girls, tons of jokes & some action sequences sprinkled in.
I'll also throw in the two OVAs as well which unlike most OVAs that are not necessary at all to the overall plot the OVAs for Kämpfer (at least the first one) is quite plot crucial. Unfortunately even with the OVAs you won't get a proper conclusion with this series. However if you like Harem Comedies then you'll get some enjoyment out of this as well. 8/10
