Quick Summary
Ch. 870 Parting
"Come out Bege" a raging BM screams.
Chiffon sticks her head out the window to try to persuade BM, but her faces exactly resembles Lola's, which further enrages BM.
BM's children watch her current state carefully. It appears they plan to capture them all in one fell swoop when they're thrown out of the crumbling castle.
Luffy sees the suffering Bege and attempts to charge out the castle but is prevented by Nami.
Now that they have the poneglyph copies and have rescued Sanji's family, there's no point in putting in rushing himself out there.
She persuades him that it will be okay to fight once they meet up with Zoro and the others.
She tells him that here is only one way for Bege to escape from this predicament.
That is while they are in the Bege's body, Bege turns back into a human and is carried away by Caesar through the sky.
Caesar explains that that is impossible since they are surrounded by many Busoushoku Haki users.
Translation: @Zoro4Prez2016
Source: Shitaraba