Kairiki Bear (かいりきベア, lit. Superpower Bear) is a male VOCALOID producer. The origin of his producer name (Kairiki Bear) comes from the enemy of the same name appearing in the game EarthBound (also known as Mother 2 in Japan).
Aside from producing his own VOCALOID works, he sometimes also mixes and masters for other producers and singers, and plays the role of the guitarist; Kairiki Bear has mixed and mastered all of Zips' Heisei Project songs. Rarely he would also participate in Touhou arranges.
Inaiinai Izonshou has two official remixes made for it. The first one made by MARETU, which had Miku as the vocalist instead of GUMI and Rin. The second is a remix made by Kairiki himself but has different lyrics.