LINNNN wahhh reading over this again is so, so lovely. i adore the little details of their lives and of atsumu in osamu's life you've included, the things like the missing items (many, many missing items,,,atsumu please,), atsumu's sleeping habits ("when he shifts too much, he hits his head against the headboard with a muted grunt" i'm laughing ATSUMU PLEASE), and of the difference when atsumu is gone. you hit that balance between exasperation and fondness for siblings v well <3 thank you for this lovely fill!