He did his best to protect his younger brother.

This verb is a godan conjugation.

I'm sorry, but I don't speak Japanese.

I am studying for the Japanese Language Proficiency Test next year.

He is a famous author, and his works are loved by many readers.

He is an excellent doctor.

I caught a cold and am coughing, 'geho-geho'.

He is known as a government scholar.

The paddy wagon was transporting the criminal to the police station.

This old watermill is still grinding grain using the flow of the river.