He is deeply interested in the theory of communism.

We need to find the real root of this equation.

I always laugh at his comical expression.

The train was full.

We went to Hawaii for our honeymoon.

Mizu is my best friend.

Jin is the ninth symbol of the Heavenly Stems.

She is respected as the queen's wife.

It's difficult to guess his feelings.

His bright smile lit up the room.