mwuahaha, after 7 years of searching i finally found it. i was coming back from an anime convention and i was searching for info on dai-guard when i found it, the anime i saw in china when i was only 5. i didn't know what it was called in english until now, prepare yourself for the ultimate anime series, star knight: tekkaman blade(known as teknoman in USA, what a corny and gay name for something so great)
i'll tell you why it's the best cause it's got all what an anime fan wants in an anime:
romance for girls
action for boys
a complex plot for both
trust me, i mean, just look at this badass pic:
i HIGHLY recommend you watch it(if you ever can) and the sequel, tekkaman blade 2.