Angelus 2: Holy Night is the cancelled sequel to Enix’s Angelus: Akuma no Fukuin, once in development by Asmik Ace Entertainment with such names as Yuzo Koshiro and Hiroyuki Kitazume working on the project, planned to be released for PC Engine and PC-98. The first game was a beloved visual novel, released only in Japan around 1988: Angelus 2 would have continued the story, left unfinished with a huge cliff-hanger. Somehow a CD-R containing data from this unreleased sequel was found some years ago by collectors, who later uploaded the content online: it seems the main plot was complete and you can listen to audio files (in japanese) to understand what would have happened in the final game:
“Angelus 2: Holy Night’s protagonist is Brian Pearl, the same reporter from the previous game. After the incidents seen in Angelus: Akuma no Fukuin, Brian and Ellis left London and had their wedding in New York. Two years have passed since then, and Brian is asked to cover a series of deaths happening in New York, caused by a strange disease (just like in the first game). He declines this request, as he doesn’t want to be involved again in a bizarre incident. Unfortunately his editor receive a letter warning of the next murder: the minister who witnessed the marriage of Brian and Ellis would be killed. Brian goes to the church, but the minister is already dead. He then decides to cover this case, because the mysterious disease has spread to people close to him. However, people involved in Brian’s life are dying one after another. As he continues his investigation, he discovers the existence of a group of evil spirits behind the incident and the resurrected demon Seva.”
In the end it seems the game was canned because the team switched development to the PC engine CD-ROM2, but the hardware sold poorly and they just decided to stop working on it.