DearS

DearS (ディアーズ, Diāzu) is a manga series co-written and illustrated by Banri Sendo and Shibuko Ebara, credited under their pen name Peach-Pit. It was serialized monthly by MediaWorks in their magazine Dengeki Comic Gao! from March 2002 to December 17, 2005 and was later published into a ten volume set by the company. The manga was licensed and translated into English by Tokyopop. A 13-episode anime was adapted by MSJ and a PlayStation 2 video game was produced by MediaWorks.

Story
Exactly one year prior to the beginning of DearS, humanity made unprecedented contact with extraterrestrial life. Forced to crash land into Tokyo Bay when, en route to their home planet of Thanatos, their spacecraft breaks down, 150 humanoid aliens are naturalized into Japanese society and affectionately nicknamed "DearS"; a portmanteau of the words "Dear" and "Friends".

Takeya Ikuhara is a temperamental seventeen-year-old Japanese student attending the fictitious Koharu High School with a strong prejudice against the DearS. Due to a childhood scare, he believes that the aliens are fake, worthless beings that have generated nationwide overhype.

On his way home from school he discovers a homeless DearS who, after fainting and much to his annoyance, he feeds and shelters in his apartment. The girl, who he nicknames Ren, is infantile and friendly, and grows obsequious and dependent upon Takeya, a responsibility he tries to disassociate himself from. Her oblivious tenacity keeps her around, however, and over time, realizing Ren's genuine care and empathy for him, Takeya has a change of heart. Unfortunately, because Ren is deemed defective, DearS headquarters orders her arrested.