The cry of the cuckoo, filled the quiet forest.

The cry of the cuckoo was echoing in the night sky.

Migratory birds move seasonally while observing the beautiful scenery of Japan.

He is really a forgetful person, always forgetting names.

He swung the long sword with birds' heads carved on the pommel.

I was able to find a red-billed leiothrix in the park.

She described the pain of a broken heart as tears.

I don't know a thing about him.

He emphasized his belief by saying, 'I believe in order to understand.'

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.