Hoshidan cast rundown! We have Ryoma, the oldest sibling with the hedgehog hair. (He got it from Dad, apparently.) I think that Corrin is the next oldest, and then Hinoka is younger than her -- she did most of the crying, because she adored Corrin when she was tiny and followed her everywhere. Ryoma tells us that she cried for months after Corrin disappeared, then stopped crying one day, picked up a naginata, and became a killing machine.

Then there's little brother Takumi, who is gruff and untrusting, and baby sister Sakura, who is cute and healy.

Huh, they are perfect counterparts to the Nohr siblings. Ryoma-Xander, Hinoka-Camilla, Takumi-Leo, Sakura-Elise.
ETA: Hoshido family to the right, Nohr family to the left, Corrins facing each other in the middle, two servants on the fringes of each side.

Anyway, lastly, we have Mom! Mikoto is gentle and beautiful and wise and all those other things you need to have in your tragic leader. She is single-handedly preventing the evil kingdom of Nohr from invading.

Corrin: Wait, wut