Artist, [[niconico]] video creator.

Japanese name: 是乃 (ぜの, Zeno)
The other names: 灰砂 (かいざ, Kaiza) or "Jeno"
Circle & site names: ぜのさいど (Zenoside) or "”JENO-SIDE”":http://twitter.com/zenokaiza/status/515792490972971008
jeno