Ultraman Ace: S1 E41 - Winter Horror Series - Scary Story! Lion Drum
Shinta has a father who is a master Shishimai dancer. While the boy play-pretended to be a terrible-monster using his father's Shishimai lion, he eventually turns into a real terrible-monster, Sisigoran. Since Shinta remains in its body, TAC and Ace has a hard time attacking, and faces great difficulty.