World War I was a large-scale war that lasted from 1914 to 1918.

He has always walked the path of sincerity.

Our house and his house are separated by a narrow body of water.

This graph is apparent at a glance, showing that sales are increasing.

Let's cherish every encounter with the spirit of 'once in a lifetime'.

He was reading a book in his room all day.

He searched for a flashlight in the darkness.

Ryuichiro is my best friend.

The strong sense of impatience I feel waiting for his return is painful.

He feels it takes time to acquire new skills, but Rome wasn't built in a day.