Gaku is my best friend.

He has a deep interest in archaeology.

He likes to take a walk in the park at dusk.

I am majoring in biophysics at university.

I am majoring in physical chemistry at university.

He thoroughly researched the history of that nation.

He is a famous composer.

He is a famous lyricist who has produced many hit songs.

He is a very excellent performer.

He dreams of becoming a famous cartoonist.