How can I open the maneuvring gear field? I can only progress Chtista's route and I don't know what to do.
Keep doing Sasha's branch, you unlock it with her
Well, I can't. To progress her route, I have to progress Henge's and to progress hers, I have to progress Christa's, which I can't
Then you've already unlocked that area, you don't need anyone to open that location with Sasha.
