[Eren hops down off the rock and walks over to Sora, showing him his wings]
See, these ones at the end are solid, like a sword, but hollow. But look at the ones on top of them. [actually... Eren plucks one with his beak and places it in Sora's hand. For all intents and purposes, it looks like a completely normal feather, and not really perceptibly heavier. Upon close examination, the barbs that make it up are made of super lightweight metal instead of keratin. At the base, the metal barbs slowly transition to fluffy keratin down] It's just like any other feather, so it works the same... even though it's made of metal. See how it's not solid? It's made of little... even tinier feathers.
oh it's ok :D and here LET ME NERD AT U ABOUT FEATHERS
[Eren hops down off the rock and walks over to Sora, showing him his wings]
See, these ones at the end are solid, like a sword, but hollow. But look at the ones on top of them. [actually... Eren plucks one with his beak and places it in Sora's hand. For all intents and purposes, it looks like a completely normal feather, and not really perceptibly heavier. Upon close examination, the barbs that make it up are made of super lightweight metal instead of keratin. At the base, the metal barbs slowly transition to fluffy keratin down] It's just like any other feather, so it works the same... even though it's made of metal. See how it's not solid? It's made of little... even tinier feathers.