In modern Japan, a heart-pounding daily life with a phantom thief blending into society might lead to you getting caught up in all sorts of trouble! In a certain part of Tokyo, a phantom thief known as "Jet-Black Arsène" has been stirring up the streets at night. However, that is only his nighttime persona. By day, he is a clerk at a street-corner cafe named Ryusei. No one suspects him of being a thief. Today, he blends into the mundane once again. You and Ryusei meet at the cafe and hit it off through casual conversation. As you talk with him, do your feelings for each other begin to change...? Spend time with a man who is a cafe clerk by day and a phantom thief by night, getting swept up in his daily life and chaotic escapades. A special moment is about to begin.