In a world entirely ruled by giants, the human race, which has turned into their food, has surrounded its residential zones with immense walls, which both prevent their freedom outside the walls and protect them from incursions. However, as a result of the appearance of supergiants who cross the wall, a desperate struggle begins and…
Cross Academy is attended by two groups of students: the Day Class and the Night Class. At twilight, when the students of the Day Class return to their dorm, they cross paths with the Night Class on their way to school.
