You, who was chasing an executive of a special fraud group that is expanding its power, succeed in arresting a junior detective during a stakeout.
As a result of the house search, the existence of the group's leader - "Zero" - and their hiding place were uncovered. You and your partner Ken head to Akita Prefecture to arrest "Zero".
With the cooperation of the local police, you discover "Zero" and hunt them down, but the confused investigation eventually leads to the truth of a cruel case from the labyrinths of the past...
This work is a suspense ADV set in the Akita / Oga region. You will pursue the truth of a serial murder case with your partner detective Ken and try to solve the case.
A lot of unique characters such as Akita's talented detective "Kisaragi", veteran detective "Mogi" who is about to retire, and mysterious Akita beauty "Rin" will appear, and you can enjoy the story like a suspense drama.