Visual novel by 07th Expansion with an anime adaptation and a version for the Playstation 3.
Part of the When They Cry series, along with Higurashi no Naku Koro Ni and Ciconia no Naku Koro Ni. 07th Expansion also developed a fighting game for it called Ougon Musou Kyoku.
The following tags are aliased to this tag: umineko and when_the_seagulls_cry (learn more).