Responses
Is it cause he's waiting for Suo to come and walk through that door easily one day ??
iirc his lock is broken
Maybe he think no one will try to come and steal something in that very old building, or because he simply didn't have someone to worry about his safety and tell him all the times(parents) he needs to close the door in his old town
Is it just me or Sakura forgetting to lock his door makes like a whole lot of sense?