Kakazu Kio, a senior high school student in Okinawa, Japan, woke up to find a strange girl beside him giving off the soft, steady sounds... more>> of a person sleeping. Moreover, there are cat ears and a tail growing out of her! In front of the bewildered Kio, his childhood friend appeared carrying breakfast. With a stern voice she asked, “Where is the pretty girl who returned with you yesterday? Introduce me!” Just as these two harsh sentences were about to turn into a full-blown pe*vert denunciation meeting, the beautiful by-the-books teacher, Itokazu Maki, burst in, making things even harder for Kio. However… this cat-ear girl who calls herself Eris is, in actual fact, an alien! But a mysterious group that refuses to accept this kind of alien contact as well as the CIA, not to mention the Japanese Intelligence Agency, are all reaching out their grubby hands towards the lighthearted Eris! “Stop it! What did Eris ever do to you?!” <<less

After being separated from each other for 6 years since the death of their parents, fraternal twins Akito Himonokouji (brother) and Akiko Himonokouji (sister) had finally reunited together again during the holidays thanks to some planning from Akito, despite objections from both of their adoption families.... more>>

Being happy that Akito had fulfilled his promise to be with her again, Akiko confessed readily that she had in*estuous love in Akito, and will not hesitate to do anything to win the love of Akito. Akito however does not harbor the same feeling for Akiko, and as a result had a headache with Akiko's actions.

Despite all these, he still loves Akiko as a sister, and finds her adorable and cute, especially when he had not seen her since she was 10 years old. <<less