Tomoda Ryouichi is on his way home from prep school when he is suddenly asked to clean the universe from space pests. Together with the three female androids: Mitsuru, the attack unit, Sherazado, the defense unit, and Asheru, the mobile unit, Ryouichi becomes the invincible hero "Esugaiya" and defeats the pests to preserve the peace of the universe. [Written by orithyea]