Since their parents died at an early age, Susumu and Yoriko have lived together. Susumu is now 33-years-old and Yoriko is 40-years-old. Both of them have yet to marry. They are like most siblings and they rely on each other. One day, Susumu and Yoriko receive a letter that is sent to the wrong address.
| Directing | Masafumi Nishida | Director |
| Writing | Masafumi Nishida | Screenplay |
| Writing | Masafumi Nishida | Novel |
| Production | Takaaki Kabuto | Executive Producer |
| Sound | Yoshihiro Ike | Original Music Composer |
| Camera | Daisuke Soma | Director of Photography |
| Sound | Masato Komatsu | Sound |
| Lighting | Kôta Satô | Gaffer |