Zero Kon ~Amaku Kiken na Gokuhi Ninmu~

title
Sango Nakajima (25) is a rookie investigator in the Public Security Police's special unit, Division Zero. On her first mission, she meets a gaudy bartender, Jin Okitsu (30), who turns out to be the ace of Divison Zero, and her direct superior!

After the mission, the two are given a top-secret mission: to form a "fake married couple" buddy team. They begin living together in a luxury apartment for the sake of the mission, and they are given one rule: no romance.

Dangerous undercover work and the sweet temptations of her superior... As the line between justice and emotion becomes blurred, there is no turning back from either love or duty. A sweet and dangerous top-secret love mission begins!