Shin Megami Tensei RPG: Digitized Terror.

[Mute Point]

Hoshi sighed at Yui's reaction. "Neither of them are the 'Phantom' Yui-chan" she said before looking up at Hori. "I do believe you are partially right, at least in the sense that the killer is not some sort of spirit being.. but there is most definitely a killer out there. Possibly even more than one." she explained. She had only a passing interest in the actual case, but what little research she had done pointed to more than one murderer.