We played karuta at the New Year's party.

I went to see a movie by myself.

Watching a movie alone is enjoyable.

He deeply believes in the principles of socialism.

He is an expert in sociology.

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

Maintaining social order is the responsibility of all of us.

Actions that go against social norms are not allowed.

We should think deeply about the reform of the social security system.

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