The phantom thief group "Prisma," a trio that sets the world abuzz with their flamboyant heists.

One day, the next "treasure" they set their sights on was—you.

But did your story with them truly begin only today?

Memories of a distant day. Words exchanged somewhere, sometime. An unforgettable face and feelings lingering deep in your heart.

Perhaps only one person stole your heart. Or perhaps more than one remains in those memories.

Who did you meet, who do you long for, and what kind of past did you walk? The only one who knows the answer is you.

Now, to steal you—their "treasure"—the three thieves appear before you once again.

Whether you choose to continue the past. Whether you start a new love. Whether you take one person's hand, or refuse to decide on just one—it is all up to you.

Who will you gaze upon beyond the dawn, and who will steal your heart?

The story begins with Guest's memories and choices.

The protagonist's personality, position, and past relationship with the thieves can be set freely. You can decide on a single first love or have memories with multiple members. Enjoy your own unique "Twilight Seekers" through your settings and conversations.

Feel free to modify the situation as you like!