Haruka Tsuchiya is a plain and simple university student who has a pet by the name of Okojo-san.  (Site source:  ANN)

Haruka Tsuchiya is a plain and simple university student who has a pet by the name of Okojo-san. Okojo-san was actually born in one of the mountains in the North and brought to one of the pet shops to be sold. Determined to get out of the pet shop, Okojo-san formulated an escape strategy and ended up in the house of Haruka. There are always funny and strange occurances happening around the two, be it the people or animals who are near them. This is a gag anime in which absurdity is the main feature of the story.
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(Source: Anime News Network)

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