This filename likely refers to a specific entry in a creator's video series or a personal file rather than a famous internet urban legend or creepypasta. Search results indicate several potential connections for the "Obsession" theme:

Could you share or any visual details from the video?

: The MrBallen Podcast has an episode titled "The Obsession," part of a "Strange, Dark & Mysterious" series.

If you saw this on a platform like TikTok or YouTube, providing the or the channel it was posted on would help in finding the specific plot.