Weiss watches on from outside with a sleeping Ruby as Yin trains by herself, image training with a bunch of enemies that Weiss obviously can't see. Though Yin isn't actually hitting anything, Weiss can FEEL the impact of the attacks. Blake comes outside and sits next to Weiss and Ruby, a bit on the grumpy side.
Blake: "Eren is fused again..."
Weiss laughs and tightens her grip on Rubys hand.
Weiss: "But you were listening to that story right? A being from another multiverse that pushed Yin to her absolute max power."
Blake sighs and nods in agreement, shivering at the thought of what kind of enemy this "Kaida" could have been if her boyfriend and partner weren't there.
Blake: "Heh. Well I'm glad we were born in a timeline where that family had a brother, huh? I mean, Yang wouldn't have been able to defeat that Kaida person alone. And if he wasn't born...we wouldn't even exist."
Weiss: "Guess so. Wonder what it would be like to have a brother who wasn't a snake like my father..."