He is doing a special exercise to train his occipitofrontalis muscle.

After he solved the problem, he said, 'It's like seeing the true form of a ghost or a withered silver grass,' meaning things are not as scary as they seem.

He is suffering from post-traumatic stress disorder from the war.

Kujō Yoshitsune, the former Prime Minister and Regent of the Go-Kyogoku, played an important role in Japanese history.

The rectus capitis posterior major muscle is a part of the neck muscles, and it helps in the action of pulling the head backwards.

The rectus capitis posterior minor muscle is a part of the neck muscles, and it helps tilt the head backwards.

He had a throat problem, and it was found that his posterior cricoarytenoid muscle was not functioning properly.

Hikohikodeken is my best friend.