The war of many long years has ended, and peace is gradually returning to the continent of Verbist. Toru, a former saboteur who has given up on his life goals and now leads a self-indulgent existence, ...

During the last days of the war, Emperor Arthur Gaz orders one of his official to be in charge of a secret project codenamed Chaika. A month after the events of the Soara, Toru, Akari, Chaika duels ...