^Canonically, Skadi is slightly taller than Specter (166 cm vs 162 cm). I'm guessing Specter looks taller in the first part because she's leaning forward and/or the author just wanted her to look tiny.
Also, I'm guessing the reason Skadi's so clingy here is because of what happened in the Under Tides event.
Edelgard is being thirsty, as usual. She didn't even edit that photo. Every picture of Byleth just looks like that to her.
Lindhardt and Caspar, being best lads.
Poor Bernadetta is caught between Ferdinand and Hubert fighting (flirting).
Petra and Dorothea, about to seal their marriage contract.