Tomoki Sakurai is a perverted teen boy whose slogan is “Peace and quiet are the best,” and frequently has goals of meeting an angel. He finds it almost impossible to reside in relaxation when he must put up with Sohara Mitsuki, his next door neighbor with a killer karate chop; Eishiro Sugata, a strange pseudo-scientist bent on finding the “New World”; and Mikako Satsukitane, their college sadistic student council president. One night, while he was watching a peculiar anomaly in the heavens, a UMA (Unidentified Mysterious Animal) crash lands near-by. Tomoki finds that what fell in the skies is a winged feminine humanoid named Ikaros from an unfamiliar world of Synapse, who shortly declares herself to be the servant of Tomoki. From then on, more creatures identified as “Angeloids” arrive; with this, he loses his solace, but in the exact same time discovers nice matters the Angeloids bring him, and battle the forces that drop up on Earth.
