The stories of the Heroic Age in Greek mythology always fascinate me.

This town once experienced a golden age, achieving many advancements and accomplishments.

According to Greek mythology, the Golden Age was a time when people enjoyed peace and prosperity.

The Sengoku period is a part of Japanese history.

He completed the project in a week.

I'm always busy during the daytime, and I only have time to rest at night.

He had been working overseas for an extended period of time.

The theory of spacetime is an important part of physics.

Mr. Mashiwa is my best friend.

Sakakima is my best friend.