Japan, 2039. Ten years after the outbreak of the "Apocalypse Virus," an event solemnly regarded as "Lost Christmas," the once proud nation has fallen under the rule of the GHQ, an independent military force dedicated to restoring order. Funeral Parlor, a guerilla group led by the infamous Gai Tsutsugami, act as freedom fighters, offering the only resistance to GHQ's cruel despotism. Inori Yuzuriha, a key member of Funeral Parlor, runs into the weak and unsociable Shuu Ouma during a crucial operation, which results in him obtaining the "Power of Kings"—an ability which allows the wielder to draw out the manifestations of an individual's personality, or "voids." Now an unwilling participant in the struggle against GHQ, Shuu must learn to control his newfound power if he is to help take back Japan once and for all. Guilty Crown follows the action-packed story of a young high school student who is dragged into a war, possessing an ability that will help him uncover the secrets of the GHQ, Funeral Parlor, and Lost Christmas. However, he will soon learn that the truth comes at a far greater price than he could have ever imagined. [Written by MAL Rewrite]

When an extraterrestrial organism known as "Savage" attacks mankind, the only technology capable of combating the enemy is a weapon known as “Hundred.” A survivor of a Savage attack, Hayato Kisaragi is a teenager boasting the highest compatibility level with the aforementioned technology and as a result, is invited to master his skills at Little Garden, a prestigious military academy aboard a battleship. Over the course of his intense training for the battle ahead, he immediately attracts the interest of multiple female peers and gets drawn into a number of incidents as he tries to fight against the creatures that now inhabit Earth and threaten its safety. [Written by MAL Rewrite]

A young man named Akitsu Masato is captured by a secret govt. project known as "Last Guardian". He is told that his life as a normal student was all a lie, and that his real destiny is to be the pilot of a great robot called "Zeorymer of the Heavens". The truth of this is hammered in when Masato sees his parents accept payment for raising him. The Last Guardian is preparing for the resurrection of "Hau Dragon", an organization bent on world conquest. 15 years ago, Hau Dragon built 8 great robots. Each of the mecha represents a force of nature. However, before any of the robots could be used, their creater Kihara Masaki destroyed the robots except for the leader: Zeorymer. He took Zeorymer and an embryo to the government. The embryo became the boy Masato. Now, Hau Dragon has rebuilt the other 7 mecha and wants the 8th. It will be up to Masato and Himuro to pilot Zeorymer and fight against the Hau Dragon, but neither Masato or Himuro are all that they seem. (Source: AniDB)

In the distant future, the nature of war has changed. "Objects"—massive, spherical tanks impermeable to standard weaponry and armed with destructive firepower—rule the battlefield; their very deployment ensures victory, rendering traditional armies useless. However, this new method of warfare is about to be turned on its head. Qwenthur Barbotage, a student studying Object Design, and Havia Winchell, a radar analyst of noble birth, serve in the Legitimate Kingdom's 37th Mobile Maintenance Battalion, tasked with supporting the Baby Magnum, one of the nation's Objects. Unfortunately, a battle gone awry places the duo in a precarious situation: mere infantry stand face-to-face against the unfathomable might of an enemy Object. As they scramble to save themselves and their fellow soldiers, a glimmer of hope shines through, and the world's perception of Objects is changed forever. Heavy Object follows these two soldiers alongside Milinda Brantini, the Baby Magnum's pilot, and their commanding officer Frolaytia Capistrano as the unit treks all over the globe to fight battle after battle. Facing one impossible situation after another, they must summon all their wit and courage to overcome the insurmountable foes that are Objects. [Written by MAL Rewrite]