Also known as: 異星ちゃん
The main character in the music video for Isei Ni Ikou Ne (Cevio) by producer/artist Iyowa (Igusuri Please). An Alien girl with Horns, often depicted in Greyscale and with a tentacle arm.
It should be noted that Isei is a fan-nickname and the character's canonical name has not been confirmed as of yet.