"That's good." Sora's never been really concerned about whether Soldat's ever been out to feel more or less human - again, his conception of personhood has always been very, very flexible - but good feelings? Being around siblings, annoying each other? That's a connection. That's important. And promises? Promises are way important.

"You made that promise. That was something you did. Now you two are connected by that promise. Especially if it was a pinky swear." Sora grins. "Promises, connections, bonds - those make your heart strong."