List Titles with SAKAGUCHI Daisuke

On a Mars covered in ice and oceans, people have learned to survive by building large floating city-ships in which they can live. And by using submarines to travel beneath the ice and harsh winds that rage overhead, humanity has been able to develop a global community. But during a distant galactic war, Earth looked to Mars as important water resource to support their war efforts. Now that the war is over, Earth still values the wealth of resources that Mars provides, and is reluctant to release their firm control over their smaller step-sister.

Shikimori Kazuki is a 17-year old high school student at the prestigious school for magic users, Aoi Academy. All students have magical abilities and have a certain number of spells they can cast in their life -- normal students can cast several thousand spells and very powerful students, like the very rich Kazetsubaki Kuriko, can cast over 100,000 in their life. But for poor Kazuki-san, he can only cast eight. After that, if he attempts to use magic, it will only result in his turning to dust. As such, he is shunned by the girls at school and really has no friends to speak of.

Over fourteen years ago, a catastrophe known as the Hammer of Eden fell apon the earth, causing the near total destruction of the planet as 90% of the land was flooded by the ocean(s). After this ruin, the Secretary General of the U.N., Aoi, formed a New United Nations for the surviving nations to help each other and live in peace. To aid in this, two (American?) Navy officers agree to help her. In the town of Yabitsu, where a nuclear-powered aircraft carrier was beached high in the rocks after the Hammer of Eden fell, Aoi sets up this New U.N. and with the nuclear power provided by the carrier, the town has plenty of electricity.