Crayon Shin-chan Gaiden: O-o-o no Shinnosuke  

クレヨンしんちゃん外伝 お・お・お・のしんのすけ, クレヨンしんちゃん外伝　お・お・お・のしんのすけ, Shin chan Spin-off vol.4: Oh Oh Oh no Shinnosuke, Shin chan Spin Off: O-O-O-No Shinnosuke

A quaint little town has recently experienced an increase in peculiar occurrences. Lately, rumors have circulated about a young youkai child named O-o-o no Shinnosuke and his father Tamatama Dad arriving in town. It is said that they are searching for the yokai Big Butt Mom who has fled her home. One day, an elementary school student Fumie Sakura was suddenly attacked by a mysterious youkai known as Fuzzy Wuzzy, with unneeded hair. This event marked the beginning of the most significant youkai investigation in the town's history.