The high school principal mistakenly approves Ren as their official "DearS foreign student," and Ren's high school life begins. She becomes the center of attraction at Koharu High School...
Takeya ends up spending the night with the mysterious DearS. Having disliked aliens since he was a child, Takeya is not taken in by her charms. He names the girl "Ren" after she tries to communicate with him.
One year ago, a spacecraft carrying a group of aliens crashed in Tokyo Bay. Not possessing any skills to return to where they came from, they officially obtained Japanese citizenship...