Seven men and women, consisting of three couples who are reluctant companions and one single man, play in the game with the secret that their relationship and friendship will collapse. Japanese remake of the Italian movie "Perfetti sconosciuti".
| Writing | Yoshikazu Okada | Screenplay |
| Directing | Michio Mitsuno | Director |
| Writing | Paolo Genovese | Original Film Writer |
| Writing | Paolo Costella | Original Film Writer |
| Writing | Paola Mammini | Original Film Writer |
| Writing | Rolando Ravello | Original Film Writer |
| Writing | Filippo Bologna | Original Film Writer |