He is struggling with a methamphetamine addiction.

There is a specific rule in this game.

Rino is my best friend.

My room is the quietest in the house.

We worked together to achieve our goal.

This room is overflowing with happiness.

In this factory, they melt iron using an electric arc furnace.

He was standing by the side of the incident, doing nothing.

Sentarou fell asleep while watching TV.

Please stop inquiring about his private life.