Hong Kong noir style visual novel.

A prequel to "紅蜘蛛/Red Spider." Takes place 7 years before Francis has been shot.

Lycoris was allegedly a hostess that worked at the KTV bar, but in reality, she was a member of an assassin syndicate called "the Web." She was working for Lau Kin Ming, a police inspector, to kill members of underworld mobs.

One day, Lau Kin Ming ordered her to kill his subordinate, Lai, because Lai discovered that he's using an assassin syndicate. But she refused and killed Lau instead. As a result, she is currently being pursued by the syndicate and Lai introduced her to Yeung Kwun, the leader of the Red Flower Society, an underworld mob that operated in Kowloon, Hong Kong.

Yeung Kwun sent her to Bangkok to hide her from the Web.
In Bangkok, she happened to see Zhang Lei, her regular customer at KTV bar and also the leader of HH brothers, an underworld mob. Wolf, Lycoris' childhood friend, accompanied Zhang Lei.

Meanwhile, a probationary inspector, Sam, and a senior constable, Chase, were investigateing the death of Lau Kin Ming. Looking for evidence of who murdered Lau, Sam found his colleague, Lai, was with a woman from CCTV footage. Sam suspected that Lai was involved in the murder.

[From official site]