Easily one of the most enigmatic characters, despite appearing in so many games, Sakuya is the Chief Maid at the Scarlet Devil Mansion. She works for her mistress, Remilia Scarlet, and is apparently the only human working at or living within the mansion. She has the power to stop time. She is known to then place knives in midair and resume time to allow these knives to fly towards her targets. Stopping time is also a handy way of doing large amounts of maid work in a short time. Because nearly everyone living or working at the mansion are maids, being the chief of them all means there are few people there with more authority within the mansion than Sakuya.
tl;dr. In brief, Sakuya is a maid from the series of games, known as Touhou Project and has the power to stop time.
However, that’s not the reason why she continues to be one of the most popular characters in Touhou.
Some just like her. Others know about her after all the various memes and videos on the internet.
For example, a remix of her theme song, which was Flowering Night, is highly viral due to its fast and catchy tempo and the multitude of videos remixed to match the song.
(a lot of these remixes seem to be of Lucky Star,apparently -or is it just me? Hmm.)
( Dear god.)
Well, due to the never-stale tempo of Night of Nights , there will much more of such videos to come in the future, and frankly they’re just strangely addictive.