Japanese word meaning lover or a lover in a illicit realationship, is often used when speaking about a homosexual realationship or a realationship that would not often be accepted by the mass majority. in a gay realtionship the aijin would be the more femanine or uke in the realtionship.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

a modern myth

depicted in an anime Ajin: Demi-Human that has a cult following, people believe the creatures are real

Aijin; noun; an alien immortal capable of strange high pitched sounds when their immortal lives are threatened, so great pain could be induced, to paralyze people not properly attuned to the harmonics of the alien kid, from any number of advanced worlds aijin come from