The horrible, fiery collision of the otaku and otherkin subcultures. I.e., people who believe they are somehow involved with/reincarnated from the souls of anime/video game characters. Japanese pop culture is literally their religion. And no, it's not a joke. They are the ultimate illustration of how utterly batshit insane the Internet has become.
After I heard about the otakukin, everything else seems sane by comparison. Even shitting dicknipples.
An umbrella term to cover a variety of anime-themed speedcore/hardstyle/gabber acts such as DJ Sharpnel (and many of his other incarnations), Killingscum, Noizu, and possibly Blasterhead, including many others.
High-speed, pitch-shifted, far east pounding bastardrave!
It was also the name of an anime speedcore party where, amongst others, DJ Sharpnel performed.
"I put all the DJ Sharpnel albums under 'Otakuspeedvibe' on my mp3 player for easy access."