A lot of anime is somewhat less than original. This one never even makes an attempt at originality. Passionate male protagonist inadvertently ends up piloting a section of a giant combining robot- there are many places where it has been done well, but this is not one of them. The obligatory assortment of pretty girls, mostly in maid outfits? I can cope with that, but they bludgeon you with the amount of fan service here. A mysterious missing sister, a mysterious genius billionaire, a mysterious masked subordinate, a mysterious freakishly proportioned busty blond... Way too much entertaining giant robot anime around to waste my time any more with this. I guess if you are really into fan service you might like it, though.