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Mr. Happy (やる気まんまん Yaruki Manman) is a 1989-1990 adult animated OVA produced by Knack Animation. It is based on the manga Yaruki Manman by Jirō Gyū and Masamichi Yokoyama. An English dub was produced by Streamline Pictures in 1991 for Playboy TV.
Synopsis
This is the story of Kazuma Kanno and his talking penis who gives him advice when need be.