If you're looking for manga similar to Galaxy Angel Party, you might like these titles.
Follow the story of a young man named Haseo who later becomes a dark hero seeking revenge and the protagonist of G.U.
Galactic Era 366, a malevolent entity, "The Ten Wise Men", manipulated the Crest of Annihilation in an attempt to destroy the entire universe. Their aspirations were crushed by the heroes' actions across many planets, and the Ten Wise Men were defeated. The Universe was at peace once again. Thereafter, the heroes decided to go their separate ways. And two years later... Precis and Leon are studying abroad on Earth. Then one day, they received an SOS from Opera and Ernest, saying that they had crashed on an underdeveloped planet. And the both of them, gathering some old friends, set off to Edifice to rescue them. But what they will find there will lead them on another adventure in which they will need to save a planet, and possibly the entire universe once again.
Ratchet is a total loser who flies around in space and thinks he is a hero. Nobody really cares for him, and ignores him whenever they can. But when he finds a strange, talking robot named Clank (which he accidentally hit with his ship) and offered to repair him, Clank joins Ratchet on his team. But the peace doesn't last for long. When the Mayor calls almost all the time, and Captain Quark comes outside of the TV whenever Ratchet or Clank uses it, everything turns into trouble.
In 21st century Japan, cars with artificial intelligence for increased safety, known as "A.I. cars," have revolutionized the car industry. Special schools teaching children driving A.I. cars have been established. One day, Kakeru Todoroki, a fifth grader of Arcadia Academy, was summoned by the school principal and given an A.I. car "to save the humanity by chosen drivers like you." The car, however, is not just a car but also a transforming robot known as "Gyrozetter."
The region of Metafalss surrounds the second Tower of Ar tonelico, which is said to represent the Goddess Frelia of the Trio of Elemia. Reyvateil in this region have been succumbing to a raging Reyvateil-exclusive epidemic called the Infel Pira Dependency (I.P.D.). Croix, a Knight under the Grand Bell Church of Pastalia, is sent to find the source of the problem and contain the epidemic. There is more transpiring in this region than just the epidemic, however, and one mission will throw him into an adventure to unravel the mysteries of the planet Ar Ciel and seek out a legend handed down by the people of Metafalss: the lost Hymn of Metafalica.
April 2014, Japan. It all starts with the High Energy Accelerator Research Organization that’s looking into the yet-unknown Exotic Star particle. A great war begins between two factions: the Enlightened, and the Resistance!