Absolutely love that his sister says "Same as ever" as if it's a common occurrence for this scene to play out for her.
But …Sister, if Ryoku comes, don't give her a map!Yes, yes.MapI'll tell my sister not to lend Ryoku a map.See ya!Same as ever …Won't Ryoku-chan be helpless on her own?And without a map, too …Ah– that's right. I had two of these in my room.I don't need this, you should give it to someone.Oh, really ♪