That's not Future Sight imo, that's Prophesying,
And i'm glad this Chapter confirmed that Elbaph is just a Piece of Giants Empire,
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I just wanna point out that:
Samurai have Oden + Momo & Hiyori
Vikings have Harald + Hajrudin & Loki
Knights have Garling + Shanks & Shamrock
Oden was One of Five Daimyos
Harald was One of ??? Giant Kings
Garling is One of Five Elders
Momo is the one who wanted to surpass his Father & become Shogun
Hajrudin is the one who wants to surpass his Father & become King of All Giants
Shanks is the one who wants to surpass his Father & sit on Empty Throne
Momo had Nine Scabbards
Hajrudin have Four Henchmen so far (But seeing how they each have a Role similar to SHs, it means He will have Nine too later)
Shanks have Nine Commanders
Hiyori had to pretend She was Evil
Loki seems to be pretending to be Evil
Shamrock is pretending too?
... etc (So many Parallels)