He wandered the boundary of life and death to fight the disease.

He missed school because of sickness.

I think his behavior is abnormal.

He is wandering the path of life.

He was wandering around the city in the middle of the night.

He was wandering in the maze.

He got lost in the new city.

We continued our journey beyond that region.

This river is the border between two countries.

Mr. Sakai is my best friend.