The "pc" indicates this version is designed for a computer [1].
Based on the file naming convention "Lunasfallfromgrace.ChapterTWO0.28-0.28-pc...", this appears to be a segment of a or a visual novel/game [1]. File: Lunasfallfromgrace.ChapterTWO0.28-0.28-pc...
If you can share this is, I can tell you more about the characters and plot! The "pc" indicates this version is designed for