I'll focus on the oversea talents.
1. Ina was in Japan at January but I think she said it wasn't for Fes? Hmm..
2. Kiara made a tweet implying she won't be in Japan at March 12th, which will be 4 days before Fes. Hmm...
3. Kronii just came back from Japan not long ago, did she say why she was there?
4. Mumei has been on and off for the past few months, could have easily sneak in a Japan trip or two.
5. I have no idea about Fauna.
6. Ame and Gura have disappeared for more than 2 weeks and both made a member post talking about preparing for Fes, Gura also implied traveling in her post.
7. Calli, IRyS and Bae already in Japan so no point speculating about them.
8. I have zero idea about any of the ID girls, I don't think any of them talked about traveling. Well, I guess Moona who is on extended break could have sneak in a Japan trip or two.