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?

Although traumatized by witnessing the murder of his parents by one of the Choushuu, Ichimura Tetsunosuke's thirst for revenge lead him to desire strength. At the age of 15, Tetsunosuke approached the Shinsengumi, wanting to become one of its members. However, Tetsunosuke lacked the skill, mind and will to emotionlessly cut down whoever threatened peace and the Shinsengumi. Even with the support of his brother Tatsunosuke and his newfound friends of the Shinsengumi, little did Tetsunosuke know the blood and pain he would have to face being part of this historical group.

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.

In the year 2062, the world's two superpowers are fighting a long and brutal war. In a desperate attempt to win, pilot Kei Katsuragi is given the mission to detonate a super weapon called the Space/Time Oscillation Bomb. The bomb explodes but the results are completely unexpected: a multitude of dimensions, times, and realities are unleashed into the world. Can Kei reverse the effects and bring life back to normal?