Aldnoah Zero is a mecha anime television series created by Olympus Knights and A-1 Pictures, that began July 2014.
The plot as follows:
In 1972, an ancient alien hypergate was discovered on the surface of the moon. Using this technology, humanity began migrating to Mars and settling there. After settlers discovered additional advanced technology, the Vers Empire was found, which claimed Mars and its secrets for themselves.
Later, the Vers Empire declared war on Earth, and in 1999, a battle on the Moon's surface caused the hypergate to explode, shattering the Moon and scattering remnants into a debris belt around the planet. Cut off from Mars, the remnants of the Vers Imperial Army established several massive orbital space stations within the debris belt and a ceasefire was established.
Fifteen years later, in 2014, an attack on the Vers princess during a peace mission causes the Empire to launch a new attack on Earth, this time determined to conquer it once and for all.
I think Aldnoah Zero takes the best anime of 2015. I loved the overall plot, the male and female protagonists, the mech designs and battles and tactical strategy of both sides of the conflict. The two boys going at each other in space takes the best mech battle of the season. I'm still enjoying the score as I commute to work too.
Some of the banter between Inaho and Inko are pretty funny.