Asshole Touhou - 東方初見殺　～ Unreasonable Mechanism.

A Touhou fighting game video from 2012 featuring unconventional or humorous mechanics. The title references an "unreasonable mechanism" and playful difficulty, suggesting experimental gameplay rather than a standard competitive match. Originally hosted on Niconico and shared by channel bellreisa, this clip draws from the Touhou fan fighting game community. The description directs viewers to the original Niconico upload and a related playlist for additional content. While specifics of the mechanics remain unclear from the available metadata, the irreverent tone and reference to creator ZUN indicate this is part of the broader Touhou doujin fighting game ecosystem. Best suited for fans familiar with the series.