Lucifer

Lucifer (ルシファー) is advanced-level furniture created by Beatrice. Lucifer is the oldest of the Seven Stakes of Purgatory and therefore their leader. Because of this she claims to be the strongest of the sisters, but she's secretly aware that she's actually the least talented. However, she has always acted arrogantly in an attempt to hide this fact from the others. Her greatest fear is that her sisters would sneer at her if they ever found out.