"In conclusion, Collar x Malice is a great title that I really enjoyed playing. It is definitely one of the better english releases of 2017, and I do recommend checking it out if you haven't already."

"There is a reason that Aksys website for this game doesn't stress that this is an otome game: the story is engaging for visual novel fans of all types. Collar X Malice is a well-crafted title that leans hard on its mystery and creates a sense of foreboding while keeping it from becoming too much."

"In the end, Collar X Malice is a great visual novel that happens to also be an otome. The story is dark, stressful, and creates an atmosphere that forces the player to want to continue."

The protagonist is a policewoman working in Shinjuku, a city that has become unsafe after a series of violent crimes known as the "X-Day Incidents".

While responding to a call late one night, an unknown assailant attacked her, and when she regained consciousness she had a collar with a poison delivery mechanism, capable of being activated remotely, around her neck.

Amidst the chaos and right before the protagonist's eyes were men with suspicious backgrounds. They're all part of an organisation composed of former police officers and have taken it upon themselves to investigate the brutal cases.

Without knowing whether she should trust these men or not, she suddenly became the person who held the key to this massive case.

In order to remove the collar that places her at the edge of death and to liberate Shinjuku from the malice that binds it, she cooperates; beginning to investigate the incidents with the men.

Who holds her life in their hands? Will Shinjuku ever return to its former glory?

(From VNDB)