TOKYO (AFP) — Former Japanese porn actress Ai Iijima, who campaigned for AIDS awareness in a nation where it is still widely seen as a foreign disease, was found dead at her home Wednesday, police said.The body of the 36-year-old, who retired in March last year from a lucrative career as a television personality, was found lying in the lounge of her condominium in downtown Shibuya by a friend."There were few signs of foul play. We will conduct a post mortem tomorrow to determine if the cause of her death was an illness, suicide or something of a criminal nature," a police spokesman said.Iijima, who was also known in the rest of Asia, gained popularity at home as a straight-talking character since her debut on television variety shows in the 1990s.Her AIDS awareness campaign started around the time she published the autobiographical "Platonic Sex" in 2000, describing her younger days as a porn actress and club hostess.