Shanks, Blackbeard and Robin
During the Zou Arc, Nekomamushi warned Robin that there may come a time that her life may be put into danger because of her capacity to read the Ponegliffs.
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Back in Ohara in Robin’s past, Jaguar D Saul and Olivia also died smiling and passing the will to Robin. According to Olvia, the knowledge of the past must be passed on to the next generation or it will disappear.
After Luffy defeated Doflamingo, we also learned that Aokiji has affiliated himself with Blackbeard.
Remember Aokiji’s words after Saul died – “This SEED that Saul protected — I wonder what she will grow up to be”
And after the incident in Marijois, Blackbeard also learned that the New Generations are already in Wano and a big battle may happen.
Do you remember Oda’s message on Jump Festa? The red haired guy may finally make his move. And you know what this means based on all the context I have explained so far. Blackbeard will also be heading to Wano with a possibility of collecting the Poneglyphs and getting Robin to decipher and tell him the way to Laughtale.