| Boku no Natsuyasumi 4 | |
|---|---|
 | |
| Developer(s) | Millennium Kitchen |
| Publisher(s) | Sony Computer Entertainment |
| Platform(s) | PlayStation Portable |
| Release |
|
| Genre(s) | Adventure |
| Mode(s) | Single player |
Boku no Natsuyasumi 4: Seitou Shounen Tanteidan "Boku to Himitsu no Chizu" (ぼくのなつやすみ4 瀬戸内少年探偵団「ボクと秘密の地図」, lit. "My Summer Vacation 4: Boy’s Inland Detective Club, Me and the Secret Map") is a video game developed by Millennium Kitchen and published by Sony Computer Entertainment for the PlayStation Portable. It is part of the popular Boku no Natsuyasumi series and was released in Japan on July 2, 2009. Like Boku no Natsuyasumi 2, it takes place in a Japanese coastal village.