Taking place during the One Year War in the year U.C. 0079, MS IGLOO 603 follows the missions of the crew of a former civilian cargo ship Jotunheim, which has been commissioned to become an experimental support ship by the Principality of Zeon to test various prototype weapons for combat use.

Once every hundred years, an imperial election is held to avert a ruinous future. Many candidates for the throne make a pledge to the saint and compete for the throne. Despite being a descendant of the first saint, Silvia, the eldest daughter of the Holy Duchy of Bernia, is oppressed by her family and the people of the territory because she lacks magical powers. However, on the night of the saint's birthday, for some reason, the holy eye resides within her, even though she should not be qualified to be a saint. "I'll be an experimental subject!" Silvia secretly runs out of the house, and as she runs for her life, she has a fateful encounter...!? (Source: Shueisha, translated)

A story about a girl, Emily, and a butler who cooks for her every day.

Zero grew up in an orphanage. Contrary to the orphanage's philosophy of "If you want it, believe in and fight for it," Zero hates competition and conflict and prefers peaceful days. However, after discovering a certain secret, Zero finds himself caught up in the whirlpool of a cruel fate...!? (Source: Shonen Jump Plus, translated)