Yomigan

The Yomigan is a strange and mysterious Dojutsu almost no one outside of the Fukitsuna Clan understands. It is capple of allowing the user to travel to Kousen when they slept, and summon the Oni that live there.

=Appearance= The Yomigan, is a black eye with a grey onion shaped

=History= The First Yomigan was created when Kai, and exiled shinobi, was pulled into Kousen while he slept by Akuma Otsutsuki after being banished to there by Kaguya. After Akuma about the state of the world, Akuma would create the Yomigan by taking the flesh and Chakra of some of his Oni, and fusing that with the eye. Kai would late ruse the Yomigan to seek vengeance on his clan for his exile.

Later, a descendant of Kai, Taiyou, would also be pulled into Kousen by Akuma to instruct him to create the Fukitsuna Clan. Akuma awakened the Yomigan that he had inherited from Kai. Akuma would use his right Byakugan to create another Yomigan, create a seal in the palm of Taiyou's hand, and had him use it to give other people the power of the Yomigan from there the Yomigan would be placed on various A to S rank missing-nin, giving many others its power.