Following years of battling in various extraterrestrial wars, humanity establishes the Galactic Union, prioritizing stability and conflict prevention amongst different planets. Nevertheless, disagreements between union members persist. In the Star Century year 0165, the Galactic Organization of Trade and Tariffs (GOTT) emerges, utilizing their powerful ES taskforce to uphold order. Within GOTT, Eclair and Lumiere hold low-rank positions as ES members, and diligently carry out missions. Nevertheless, the more they explore the galaxy, doubts come to the fore that their understanding of GOTT, the Galactic Union, and even themselves, may be insufficient...