Promise of Wizard

One day, Akira gets lost in a world where wizards and humans coexist. In this world, the moon that attacks the world is feared as a "great disaster", and Akira, as a sage, saves the world together with the wizards who fight against the moon. Akira participates in a parade in the royal capital with the wizards and is welcomed by the townspeople. However, there is also a wizard who does not appear... The story of the battle between the wizards and the sage and the moon unfolds. (Source: Natalie, translated)

Comic anthology related to the game and manga: Mahoutsukai no Yakusoku featuring the daily lives of the wizard and the Master Sage.