>>27747358KFP and Pomudachis are only on friendly terms because our oshis are. They really have nothing in common otherwise. Most KFP are not really weebs or even idolfags, they simply like Kiara because of her personality, which is very different from Pomu if you watch both of them.
I don't think there's anyone in NijiEN really comparable to KFP. I guess Yuguys might be kinda similar in that they ended up growing parasocial towards Yugo through having to be his emotional crutch when he's having menhera episodes on stream repeatedly. But Yuguys are such a small fanbase they don't come close to KFP's cult-like behavior.