What's the point of hiding Reiju and Ichiji and then having Brûlée wondering, not confirming, that it must be them, and then commenting on how inexplicably the books got fire if, at the end of the day, they invaders truly were the siblings.
For real, is such a dumb move from Oda that I still want Devon to be turning other people into the siblings and Shiryu burning the books. The siblings being the invaders has zero interest.
Rest of the chapter seems equally irrelevant. Oda not letting us see adult Momonosuke is exhausting, and both Kaidou and Big Mom in the magmatic depths sounds fishy as hell. How are they going to recover them from there? Because they either die there, someone capable of going down there rescues them (and I can only think of Sakazuki), something crazy happens with Mount Fuji (like an eruption sending them away) or they are both coming back at some point.