Osamu nods. He isn't even sure that normal sibling relationships would be like his and Atsumu's, not with them being twins. Everyone says it's different with twins, that the bond is stronger. Especially identical ones like they are. They've never been able to read each other's minds or tell when each other are sick the way some people say they should be, but the closeness has been there for their whole lives.

And for just as long, Osamu's been the one tempering Atsumu's relationship with the rest of the world.

"I know you're right," Osamu grunts, turning the tap off and wiping his hands dry as he finishes up with the dishes, finally. "But I'm tired of luggin' him around after me. He can't rely on me forever. Not anymore."