The special theory of relativity is a theory proposed by Einstein.

Learning about the ancient special kana usage is very important for understanding ancient Japanese.

The Jōdai Tokushu Kanazukai is one of the notation methods of ancient Japan.

He is good at solving technical problems.

He always has an optimistic attitude.

His music is very avant-garde, and some people might not understand it.

He is facing economic problems.

This word is etymologically derived from Latin.

Looking at this kanji graphically etymologically, its shape represents its meaning.

Japanese history had a feudal social structure for a long time.