Jus gentium is a universal law that applies to all people.

He saved a hundred thousand yen.

The flags of all nations are fluttering in the wind.

Just in case he fails the exam, what should we do?

Mr. Aman is my best friend.

Makoto is my best friend.

This park is open to everybody.

He is knowledgeable in all fields of learning.

He is writing a sentence using traditional characters.

This document is using an old form of character.