Ryusei is my best friend.

Last night, when I looked up at the sky, a meteor suddenly streaked across.

He deeply reflected on his actions.

He was reflecting on his actions.

I will never forget the days of my youth.

This park is always tranquil, making it the perfect place to relax.

When I looked up at the night sky, I could clearly see the Big Dipper.

A new law has come into being.

A new law has come into being.

This substance has high flammability, so fire is strictly prohibited.