[Machine Translation] One day, while masturbating, Koichi, a student at a boys' school, is summoned to another world. One day, while masturbating, he is summoned to another world, a land of giants inhabited by a race much larger than himself. The first prince, Caius, appears in front of Koichi, looks at him passionately and proposes, "Be my bride, and give birth to my child. The <largest> coupling in BL history is finally published in book form! Includes many new illustrations.