One year ago, a UFO containing 150 aliens crash-landed off the shores of Kasai. Because no one could fix their ship, the Japanese Government decided to bestow upon them the designation "DearS" and make them into Japanese citizens. One morning, a truck carrying a capsule that housed one of the aliens ends up dropping it into the riverbank, releasing her from her confinement. She is eventually found by a high school student named Takeya Ikuhara, who saves her, despite being extremely distrustful of their race and wanting nothing to do with them. Upon being named Ren, she imprints upon him as her "Master" and serves as his personal "Slave," leaving him with a "DearS" who wants to remain with him no matter what.
Seasons & Episode
Detached and confused about Ren, Takeya grows increasingly rash towards her. Miu helps to explain the situation and supervises her after class. That night, Khi visits Miu to collect information on Ren while, back at the apartment, uncontrollably aroused by her body, and sensing this, Ren straddles a distraught Takeya.
Takeya stops Ren from sexually advancing, calling it too soon. Slightly awkward from this, he distances himself from her for most of the day. Miu invites herself to reform Ren by showing her to cook and gaily decorating the apartment. As Takeya throws out the flashy new room additions, he is hastily tackled by his stepsister, Natsuki Ikuhara.
During school, Khi visits Miu to inform her that Ren's confirmation ceremony is to be annulled. After two embarrassing incidents, Takeya distances himself from her; being asked by Yoshimine to fetch class textbooks. Ren goes to collect the material but goes into the wrong room; meeting Hirofumi. Talking out her sexual interests, Hirofumi feels led on and embraces Ren; interrupted by Takeya who finds her. Coming back from work to Khi and Miu, he is informed that Ren is to be recalled. As Takeya sits in shock, Xaki locates Ren in the market.