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Okishiro Nagi leaves Tokyo to find his sister, who he hasn't seen for twelve years. Unfortunately, she lives in a very mountainous place. So on his way, he sees a....monster...who says "eye to eye" and it chases after him. He trips and falls into a pond. He can't swim! Then, a woman - with cat ears - saves him. She also says "eye to eye". What!? His wild life shall begin!