Maiku Kamishiro's past has always been somewhat of a mystery to him. The only clue he has to who his family might be is an old photograph showing two young children, a boy and a girl, playing in a small pool outside of a blue house. In an attempt to find his family, he moves to this blue house and begins working as a programmer. He's living a comfortable life until the day two very different girls show up at his door, both in possession of the same photograph, and both claiming to be his twin. With no way to prove who is a relative and who is a stranger, Maiku allows both girls to move in with him until they know for sure. 

(Source: ANN)

The story is set in the future on the planet named Amoi which is controlled by a supercomputer named Jupiter. Among the mostly male human population, the light-haired elite class is allowed to temporarily keep the dark-haired "mongrels" as pets. One elite member, Iason, encounters a mongrel named Riki in the slums and decides to take him in. However, Iason keeps Riki longer than it is socially approved, and rumors abound about their possible relationship.

This is the world of the battle analysis system "Compass 2.0". It is a dreamlike space where heroes gathered from many different worlds spend time together with their human partners, the players. The energy generated by the heroes' battles is essential to the operation of #Compass, and battling is their responsibility. However, a troubled hero named 13 refuses to find a partner or battle, and is on the verge of being banished from the world of #Compass 2.0! Meanwhile, Jin, a beginner player who has just arrived in the world of #Compass 2.0, seems interested in 13 as a potential partner. However, a major incident begins to occur in the world of #Compass 2.0... Could the key to resolving the issue be 13's special ability? Can our troubled hero and his new partner bring peace back to the world of #Compass2.0?

Amate Yuzuriha is a high-school student living peacefully in a space colony floating in outer space. When she meets a war refugee named Nyaan, Amate is drawn into the illegal mobile suit dueling sport known as Clan Battle. Under the entry name "Machu," she throws herself into fierce battle day after day, piloting the GQuuuuuuX. Then an unidentified Gundam mobile suit pursued by both the space force and the police appears before her, along with its pilot, a boy named Shuji. Now their world is about to enter a new era.