He is suffering from acute leukemia.

He contracted severe invasive streptococcal disease and underwent emergency surgery.

The United Nations Security Council plays a crucial role in maintaining world peace and security.

His room was like a chaos.

That terrifying character scared the children.

Special relativity is one of the fundamental theories of physics.

Ichishiro-san is my best friend.

This fabric has high color fastness, so it is hard for the color to fade even when washed.

I often go roller skating in the park on weekends.

I enjoyed sandboarding at the sandboarding dome.