oh shit lmao i just popped open the harvest moon ds cute rom in a filebrowser tool, and uhhhhh, they shipped this game with a file named 'Desktop_.ini' in every folder, which has the text '2007-6-25' in it.
according to google, this file is dropped by a bit of malware called 'Fujacks' (see: https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Virus%3AWin32%2FFujacks.D ), meaning that whoever built the rom that they shipped did it on a computer infected with this virus.
update: the japanese version of the game doesn't have it meaning that it's Natsume that got owned