Fibrinogen plays an important role in blood clotting.

I want to go to Iturup.

He swung the falcata around.

This is a fake diamond.

He flattered his boss and got a promotion.

The sea roach is a marine creature known for eating the wood of ships.

I exercise at the fitness club every day.

He didn't know that fact.

This font is easy to read and the design is also nice, isn't it?

A sea roach, also known as Funamushi, is a common insect seen in the sea.