[Unanswered]  Whats up with the black string on this launcher?

https://beyhaven.com/products/black-stri...akara-tomy
https://beyhaven.com/products/black-stri...0f44&_ss=r

So I have a few questions, which product is this originally from? this launcher is from bb-23 pre hybrid ldrago, but I have seen authentic unboxings of pre hybrid ldrago, both the wbba and gold recolor of pre hybrid ldrago have white string left launchers not black. So is it a chance thing? like in 1 in 50 of these authentic pre hybrid ldrago you get a black string instead of white, or does it come from a different product than bb-23 pre hybrid ldrago, or is it a mod where they replace the string of the launcher of pre hybrid ldrago with a more durable, longer string that perhaps comes from another beyblade product. I also noticed these black strings are only on the launchers of the bb-23 pre hybrid ldrago and some right string launchers.

forgot to add that I have checked all the other ldragos left string launcher and they all have white strings not black, and from what I've seen only pre hybrid is the only left string launcher that have black strings. all midfakes of every version/evolution of l drago also have white strings.