>>9583052>>9583180>>9583158The real answer is that Red-kun was originally Haato's In-universe boyfriend (yes, Haato. He first appeared way back in September 2019).
https://www.youtube.com/watch?v=HhF4hS36q6gBut then he got decapitated sometime off-stream, and after that he "became an existence that appears sometimes in singing streams" (both said by Haato herself), so that's why some people suspects that either he's one of her personalities all along, or that Haachama somehow absorbed him.
