Winter of Horror Series - Ghost Story! Lion Drum (冬の怪奇シリーズ - 怪談獅子 太鼓,Fuyu no Kaiki Shirīzu・Kaidan Shishi TaikoUltraman Ace. It is the first of the 3 Episode Story Arc, Winter of Horror Series (冬の怪奇シリーズ, Fuyu no Kaiki Shirizu ).) is the 41st episode of
Dan and his friends play hide and seek on shrine grounds. While playing, Dan and Shinta found an old lion mask and drum, and the kids decide to play at being terrible-monsters. They also run into Seiji and Mikawa, who are in the area searching for a monster's signal. The kids offer to help, but when Shinta tries to take the mask off it won't come loose.
Ultraman Ace Volume 11 features episodes 41-44.