While the original PC game dates back to 2008, interest in a "2021" version typically refers to modern efforts to preserve or run the

The original PC game features high-quality assets that are difficult to optimize for the limited hardware and resolution of the DS. Homebrew Scene:

However, preservationists argue that without the 2021 dump, this unique piece of DS homebrew/prototype history would have been lost forever—its time-based mechanics erased when the original flashcart’s battery died. The ROM is now archived in at least three digital preservation nodes, including the Dark Umbra Collection and the DS Homebrew Archive.

That’s where he found the post.

Originally developed by Mu Soft, Hizashi no Naka no Real is a visual novel and interaction-based "eroge" (adult game). It gained notoriety online for its high-quality Flash animations at the time and its interactive mechanics that allowed players to engage with a virtual character through a series of "days" to unlock new scenes. The 2021 DS ROM Port

Behind the text, the DSi screen flickered for the last time. A final image: a train platform. Tokyo Station. A date stamp: August 16, 2021 – 9:47 AM.