>>35437296BW and BW2 were terribly planned.
No, seriously, it doesn't take too much to see that BW's ending was just a shock stunt so everyone that read it would buy the sequel.
Yet look at how things are now, unlikable portagonists, nobody gives a damn about them, the one time anyone cared about the arc was related to Black and White (because the writer realised that romance sells, just like GF and OLM), it's been nearly six years since it first started and the arc's still stuck in a never-ending cycle of delays and hiatus.