
If you're looking for manga similar to La La La De Ma Xi Ya Third Season, you might like these titles.
In the year 2032, Earth suffers from a sudden invasion by alien forces. Nineteen years passed after that event, and with chaos ruling the globe, the only way to rescue the world from utter destruction is to survive and fight against those who force Earth into complete annihilation.
Due to the friendship he had with Ted, McDohl's attempt to save him eventually turned his life around from being the son of General Teo McDohl of the Imperial Army to become a wanted enemy of the Empire. A chosen bearer of one of the 27 True Runes, his encounters with death were already foreboding the moment the True Rune was attached to his right hand. Yet, McDohl continues to walk upon the journey through the Empire: facing corruption, cruelty and the life-changing decisions he has to make in order to restore order and peace for the people in his country and to fulfill the hope of many that was entrusted to him.
The year is 200X. Jin, Akira and Lena are three child hood friends who like mysterious things. One day in the library, along with the mysterious transfer student Ami, they find the "Akuma Compendium". They chanted an incantation in the book and, to their surprise, devils appeared. Ami then told Jin and Akira that they are the Devil Children that will decide the fate of the world. She hands them their Devil Risers. The group then pass through the "Door of Time" to the land of Valhalla where they fight an evil ruler known as Imperius who plans on conquering all of the world. The Nakama of Jin is Rand, a Sol Lion, and Akira's is Gale, a Hylon.
AD 2199. The world is covered in seithr and mankind is forced to live in Hierarchical cities, ascending constructions similar to towers. The 13th Hierarchical City of Kagutsuchi has been infiltrated by a man with the most bounty in the world. He is Ragna the Bloodedge, the ‘Grim Reaper’, a man who possesses the Azure Grimoire. Thus, the wheel of fate begins to turn. “Restriction 666 released, Dimensional Interference Field deployed! BlazBlue, activate!”
In the sparkling era year 3015, the great nations Donatia and Kouran divided the world in a cold war as they fight for supremacy. In the middle of this standoff is island country Nil Kamui, which has lost its independence.