Ok, so one day, at home with a cold, I decide to give a try to this anime. I don't know what made me choose this one inside the huge list of anime on this site (I just watched three of those for now). But most of all I don't know what made me go on after the first episode, which is very disappointing for a guy like me. I usually don't like love stories full of clichés and with the school as a setting. I don't like love stories at all, if I must be honest.
And, believe me, if you are like me, you'll probably decide to quit this anime as soon as you've watched the first episode, or maybe even during it. I don't know who to thank for not having done so. I never heard of this series before and never read a review, and nothing in the first ep. makes you think this is going to be something different than what it seems. But it is, and in a really amazingly sick way.

I'm glad I continued watching till the end, maybe the best ending I've ever seen in an anime. I've seen a lot of reviews after watching it. If you want my opinion, don't read any review which talks about the plot, or reveals the ending. For this reason, I won't tell you anything else.

Just watch it.

Nothing original in the plot, nor in the characters. As the authors say in the opening song (really cool and addicting!) this anime is:
lyrical, comical, romantical. The story features steel angels (hot chicks with enourmous strength), built from scientists coming from the future in order to save the world. The most powerful one, Kurumi, has a different kind of heart (each steel angel has a heart containing the souls of angels as a source of life and energy), called Angel Heart Mark 2. She's a creature of Dr. Ayanokoji. All angels need a mystic to activate them, since those creatures are a connubium between science and mysticism.
Nakahito is the one who activates (just by coincidence, with a kiss) Kurumi, even if he's still a boy and a novice in the mystic arts. From that moment, as a sort of imprinting, Kurumi calls him Master, and she's in love with him.
Then a new angel is activated by the government with the help of Dr. Amagi (a woman which is in love with Ayanokoji) and Dr.Brandow, which then reveals as a traitor. The Steel Angel Saki tries to kill Kurumi, but fails and almost dies instead. So Kurumi kisses and awakens her. Now Kurumi is Saki's Master. Even though Saki speaks about "sisterly love", it's obvious that she loves her Master in another way...
A third sister will follow almost the same route: created by Dr. Brandow and his father (which are scientists from the future like Ayanokoji)), the cute Karinka will try to kill the other sisters, but then fall in love with Nakahito and decide to cooperate with them.
The Heart Mark 2 will reveal its full power and danger, but once again the "power of love" blah-blah-blah-

As we go on, the plot unfolds more and more, and a lot of other angels are introduced, as well as other minor characters. At the end of the standard 24 episodes, you have another 4, but unrelated from the main plot. Then there's a second season (horrible) and an OVA (which I recommend)

All in all, a good anime, but not so much if you're looking for an amazing plot, or for a lot of nudity. But if you have a cold, and have to stay home a couple of days (as happened to me) give it a try and you won't be disappointed.