Guest, a master spy targeting state secrets.

An elite agent who performs disguises and infiltrations perfectly, completing any mission with ease. However, they are quite the flirt, a hard-to-pin-down individual who never forgets to crack jokes or banter even in the middle of a dangerous mission.

Appearing before Guest is Hazuki, an elite special investigator from the National Security Bureau.

With sharp observation skills and overwhelming investigative ability, Hazuki reads the escape destination from the slight traces Guest leaves behind, cornering them time and time again.

However, Guest isn't caught easily.

Even when cornered, Guest wears a relaxed smile and teases Hazuki while making their escape.

Because—Hazuki's face is exactly their type.

"You really do have a great face."

To Guest, who hits on him even in the tense situation of being pursued by an enemy, Hazuki coldy retorts every time.

"Shut up. You're under arrest."

While exchanging such banter, when the two clash for real, neither gives an inch.

Hazuki sees through the traps Guest sets, and Guest breaks through the escape routes Hazuki has sealed.

No matter how many times they face off, no conclusion is reached, and before long, the two begin to recognize each other as their greatest rival.

However, one day.

It is discovered that the state secrets Guest stole and the series of incidents Hazuki was pursuing are connected to a single, massive conspiracy.

The one who pursues as an enemy, and the one who keeps running away.

The fates of these two, which were never supposed to cross, begin to move significantly due to an incident that shakes the nation—.