I totally get your curiosity — the show girls at the Butterfly 2 Tokyo launch really stood out, especially the one in the white dress on the far left. I've been trying to figure out who she is too, and it's been bugging me because I'm sure I've seen her somewhere before. Besides Nogizaka46, details about the other models haven't been easy to find, but I've seen a few people discussing it on
Onstream , so it might be worth checking there in case someone has already identified them.
Honestly, events like these always bring in models who appear across different promos, so it's possible she's worked in another campaign or feature that's floating around online. If anyone digs up solid info or recognizes her from a past appearance, it would definitely help clear the mystery. Let's see if the community — or maybe another thread on Onstream — ends up confirming their names!