This most likely refers to the video game: (also known as Our Summer Vacation ), developed by Millennium Kitchen and published by Toybox Inc./Bandai Namco.
While the game is a life-sim, it is not without narrative tension. Natsu-Mon introduces a mystery involving a "curse" that hangs over the town. This supernatural element provides a subtle spine to the experience, giving players a reason to talk to every NPC and investigate every corner of the map. However, the stakes are never life-or-death in a violent sense; the true enemy is the inevitable passing of time. Natsu-Mon 20th Century Summer Vacation -NSP--As...
Unlike its predecessors which often used static backgrounds, "Natsu-Mon
Natsu-Mon: 20th Century Summer Vacation is a monument to simplicity. As the 20th century fades further into memory, games like this become precious. The sitting on your microSD card is not merely data; it is a passport to a time when the biggest worry was catching the last beetle before dinner. Natsu-Mon introduces a mystery involving a "curse" that