When an odd boy shows up at Karin Maaka's house claiming to be her cousin, her already awkward life goes topsy turvy as she is suddenly hunted by cyborgs, abducted by aliens and thrown right into another world's war! Throughout it all she strives to discover, just who is Annul Amity and why did he choose her family? She can just tell this is gonna be SO EMBARRASSING! M at times.