Based on a game by aias.

3 months ago, detective Kido Satoru accepted an odd assignment at the suspicious western-style mansion Genmukan. There, he was caught up in a tragedy of love and hate. 3 months ago, he had rescued the maid Watase Nozomi from the inferno which consumed the mansion. However, the story is not quite over yet...

~ translated and adapted from the official japanese site by Cranston

Note: Sequel to the events depicted in Tony Taka's 2004 hit game Shinshou Genmukan.