Mayume Clan

The Mayume clan (魔夢一族, Mayume Ichizoku) is one of the Royal Five Clans of Aeon. It was one of the Royal Four Clans who founded Aeon during the post-conquest era and has been de facto ruler of the Western Aeon ever since. The members of this clan were born with Kyōfukui, a powerful kekkei genkai which made them nearly invincible during the Conquest Era.

Background
Mayume clan was one of the strongest clan during the Conquest Era. They were strong and influential enough to lead a dozen of clans under its flag, known as Mayume Alliance. The name of the clan spread further after they defeated one of the most tyrannical clan from invading its vessels. The most famous and strongest Mayume member was Heisei Mayume (平静). He combined Mayume Alliance with three other powerful alliance to become one of the biggest and strongest alliance namely Aeon Alliance. However, the stronger they became, the more enemies they met. Even though they were undefeatable, realizing that power alone cannot create peace, they decided to retire from war zone. Together with Makise, Chin and Seiheki clan, they founded Aeon. Mayume clan and its vessels lived at the west and Mayume was granted permanent ruling power on that area.

Abilities
The Mayume are feared for their Kyōfukui, a kekkei genkai which modifies their body to sense and drain the emotion of fear. With modified organs and enzymes, they are able to sense the emotion of fear, drain it into their body and convert it into energy and chakra. With this ability, they can survive solely by feeding on fear from other people.

Members of this clan were taught the Hiden Jutsu Mugen Sōsa (夢幻操作), which allow them to enter, observe and manipulate the dream of one person. This ability allow them to find out what is one’s nightmare, directly giving them the knowledge of what their target fears. With this knowledge, striking fear in one’s heart become easier than ever which in turn creates more source of power for their kekkei genkai.