One day, a ronin on his way home gave a bento to a cosplay cat girl. Unexpectedly, the cat girl then decided to stay at his house, resulting in the two living together. Another unexpected thing is that the girl turns out to be one of the mountain shrine Gods... Having to deal with the girl's magic and the teasing from other cats and Gods keeps the main charter’s hands full. Will he ever get a break or will his "big pet" be a burden forever.