He used to be a member of the Chinese gang.

He experienced the harsh reality of the underbelly of society.

His sociability is an important factor for his success as a leader.

He is deeply interested in social issues.

He deeply believes in the principles of socialism.

Maintaining social order is the responsibility of all of us.

He understands his responsibilities as a working adult.

After graduating from university, you have to prepare to enter the real world.

The Japanese river otter is an endangered species and is a target for nature conservation.

The Japanese tree frog is a beautiful frog that lives in the forests of Japan.