Set in the densely cluttered streets of "Kowlong," filled with obscurity and chaos, this battle action-adventure game casts players as the "Hyoki," an entity devoid of memory and physical form. His only motive is to eradicate the monstrous beings known as "Slitterheads" crawling around the city, disguising themselves as humans. Roaming the vibrant neon-lit cityscape, players must seek out allies among humans known as "Rarities," infiltrate and track dangerous organizations, and engage in battles harnessing the power of blood. As the suspenseful drama unfolds, delve into the mystery behind Hyoki's existence and the appearance of the Slitterheads.

• Take various forms and hunt in the red light district: Play as the bodiless entity "Hyoki" as you wander amidst the chaos of the city of Kowlong, taking control of various living hosts to hunt down the Slitterheads masquerading within human society.
• Possession-based high speed action: Being devoid of physical form, Hyoki can slip through barriers and take possession of specific individuals as needed to infiltrate dangerous areas and organizations. By rapidly switching hosts, he can also traverse the city at high speed.
• Thrilling combat using the power of blood: Hyoki can turn his host’s blood into weapons to confront the ferocious Slitterheads and can even switch hosts when wounded to continue the fight. By possessing "Rarities", specific humans who share high sync with Hyoki, he is able to unleash even more powerful attacks and activate unique abilities.
• An original new offering from two industry titans: Keiichiro Toyama once again redefines traditional genres to bring a new kind of game experience, while composer Akira Yamaoka creates yet another memorable soundtrack to complement the tense and high-energy streets of Kowlong.
• Take various forms and hunt in the red light district: Play as the bodiless entity "Hyoki" as you wander amidst the chaos of the city of Kowlong, taking control of various living hosts to hunt down the Slitterheads masquerading within human society.
• Possession-based high speed action: Being devoid of physical form, Hyoki can slip through barriers and take possession of specific individuals as needed to infiltrate dangerous areas and organizations. By rapidly switching hosts, he can also traverse the city at high speed.
• Thrilling combat using the power of blood: Hyoki can turn his host’s blood into weapons to confront the ferocious Slitterheads and can even switch hosts when wounded to continue the fight. By possessing "Rarities", specific humans who share high sync with Hyoki, he is able to unleash even more powerful attacks and activate unique abilities.
• An original new offering from two industry titans: Keiichiro Toyama once again redefines traditional genres to bring a new kind of game experience, while composer Akira Yamaoka creates yet another memorable soundtrack to complement the tense and high-energy streets of Kowlong.