Japan has a treasury of horror stories that will traumatize you and ruin your day, whether it be old folklore or modern urban myths. Here's one of each.
Why do Power Rangers, originally a Japanese kids TV content franchise, give a self-introduction every time they go into battle, and why do villains just patiently wait for them to finish? The Power Ranger series in Japan are the same deal. There is in fact an interesting historical/cultural background to their absurd behaviors - in the lives of Japanese samurais 400 to 800 years ago.