AIRE NATACIA HIRAI was the daughter of a well-known businessman before something tragic occurred. She was the only survivor of that massacre. She intended to exact vengeance on her enemies in exchange for her parents' justice. The enemies believe she is confident in her ability to defeat them without the assistance of others. They assumed she didn't have one behind her. They had no idea that her parents had predicted that thing would happen, so they had already made their move - they had hidden their other beloved child from the public. They were too naive about it and belittled Aire Natacia Hirai, but they didn't realize her sister was already plotting her own downfall for the enemy.