After years together, your girlfriend Tsukiyama Chisa suddenly decides to leave to study overseas. No argument or plea can change it—only five final days remain.

Within the closed space of your room, you mark each other in every corner—through skin, heat, and aching closeness. Through touch—and through pain—you confirm that the other is still there, still real.

When the countdown reaches zero, can you walk away carrying only her fading warmth and lingering scent?