[There are hardly ever sounds from this apartment, although it's hard to say if it's due to the owner being out or simply quiet. But who knows? If you knock, he'll certainly answer - and probably give you a quick but subtle scan while he tries to memorize your general appearance.]
Hello?
[As for the rest of the time, he's spending a lot of time wandering around the apartments while he quietly figures out who lives where. But he's not exactly opposed to conversation, so it'd be an easy matter to start up a chat should your character want to know why there's a kid standing around staring at apartment doors.]
Sasuke Sagami | Pisces 9-04
Hello?
[As for the rest of the time, he's spending a lot of time wandering around the apartments while he quietly figures out who lives where. But he's not exactly opposed to conversation, so it'd be an easy matter to start up a chat should your character want to know why there's a kid standing around staring at apartment doors.]