Kiki Kai Kai btw has a follow up on PS2 called "Heavenly Guardian", which is quite good.
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Like The Ninja Warriors, KiKi KaiKai had been a one-off work until 1992, when Taito allowed Natsume to release KiKi KaiKai: Nazo no Kuro Mantle, which would be known as Pocky & Rocky for its North American release. Natsume would follow up with Pocky & Rocky 2, and years later would help Altron to release Pocky & Rocky with Becky.
A modern continuation to KiKi KaiKai, KiKi KaiKai 2, was originally in development for the PlayStation 2 console by Starfish Entertainment and set for a 2006 release, but was canceled early in its development[13] only to reemerge as the unlicensed spiritual successor with title Kiki Kai World, which later became Heavenly Guardian when published.[citation needed]
The protagonist of the game's design, as well as the ghost enemies, would later become heavy influences for the characters Reimu Hakurei and equivalent ghost enemies respectively in the Touhou Project games on the PC-98.[citation needed]
In WarioWare: D.I.Y., Sayo-chan from KiKi KaiKai appeared in one of the microgames.