Sono toki Ultra no haha wa
- Episode aired Apr 13, 1973
- TV-PG
After successfully battling a liquid monster Kotaro falls into a mysterious hole that lands him in the stomach of another Terrible Monster.After successfully battling a liquid monster Kotaro falls into a mysterious hole that lands him in the stomach of another Terrible Monster.After successfully battling a liquid monster Kotaro falls into a mysterious hole that lands him in the stomach of another Terrible Monster.