Fourty shorts featuring a delightfully chubby cat named Oi-san. This entry also includes the unnumbered "はじまり" (Hajimari) episode that was released the same day as the numbered episode 1.
Oi-san to 40 no Monogatari has finished airing and it has 41 Episodes. It is also Known as: オイさんと40の物語, Oi-san to 40 no Monogatari
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