Mōmokugan

The Mōmokugan  is the dojutsu kekkei genki of the Hikage clan. Its origins are unknown but is thought to have been an offshoot of the byakugan.

Background
The Mōmokugan is manifested as a very distinct eye on the user's forehead, characterized by a single large iris with no visable pupils. Unlike the Sharingan, the  Mōmokugan does not need to awaken as it is usable from birth. Also all members of the clan are possess this kekkei genkai though abilities differ from user to user.

Abilities
The primary ability of the Mōmokugan is to give the user a "sixth sense". This sense varies though it is usually Electroreception, being able to sense vibrations in the air and ground, or Echolocation. However if the user's  Mōmokugan possess any of these powers their "main" eyes will be rendered blind and turn pale, though this is usually not much of an issue due to the above abilities.

Sometimes  the user's   Mōmokugan will not possess any sixth sense and there for the user will not be blind.