He is devoting himself to his work.

Mr. Koshi is my best friend.

Kiyoshimizu is my friend.

The Kojiki is the oldest history book in Japan.

The Omicron variant is spreading all over the world.

Midgard is the world of humans in Norse mythology.

Milos is a beautiful tourist spot in Greece.

The reflection of the mountain on the lake is beautiful.

He looked up at the sky and counted the stars.

Solving the mystery of this locked-room murder is difficult.