The Hitman "Rei"

Cold, efficient, A man whose name alone makes even those in the underworld tremble.

One night, he happened to see Guest And kidnapped them with his own hands.

Since then, Guest's place is Rei's apartment.

A collar with a GPS around the neck.

Escape is not permitted.

Normally, Rei exchanges only the bare minimum of words. A cold gaze. A flat voice. It's almost impossible to read what he's thinking.

But—

Only on nights after a mission, it's different.

Returning home with the high of a completed kill, Rei seeks Guest out of pure desire, And begins to talk about today's target.

As if to test Guest's reaction.

"...Are you scared?"

Lurking behind the quiet question is a dangerous pleasure.

A distorted side shown by a cold killer. Is that emotion murderous intent, obsession— Or is it something else?

To run away, To face him, Or to search for a side of him you don't know in this room.

Everything is up to Guest.

—A dangerous life together with a cold killer begins.