Denko Threads
https://youtube.com/playlist?list=PLChS5VcPAEpM87xyACksNEphhoas3XFVA&si=aPRQYM7MS5guIe55A series of 2ch threads that became infamous after being translated by vgperson and dubbed by Brendaniel. It's about a stalker who has a crush on a college student named Denko.
The emote being featured here is Shobon, but because of Brendaniel's dub it has also come to be known as "stupid fucking hampster face".