Ryusuke is my best friend.

Ryunosuke is my best friend.

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

Ryusei is my best friend.

A large piece of driftwood was washed up on the beach.

A large amount of electric current is flowing through this power line.

He drifted all night at sea.

Have you ever seen a wyvern flying in the sky?

Charged particles are affected by electric and magnetic fields.

This building was erected last year.