context: The expression parasaito shinguru was first used by Professor Masahiro Yamada of Tokyo Gakugei University in his bestselling book The Age of Parasite Singles (パラサイトシングルの時代, parasaito shinguru no jidai), published in October 1999.
source: Professor Yamada subsequently coined the related term parasite couple to refer to married children living with the parents of one partner.
reference_original: Depois, Professor Yamada inventou o termo que tem relação com casais parasitas usado para se referir a filhos casados que moram com os pais do parceiro.
reference_flipped: Depois, Professora Yamada inventou o termo que tem relação com casais parasitas usado para se referir a filhos casados que moram com os pais do parceiro.