[Haruka's scent wasn't familiar but it was close enough that he knew a Pureblood when he was in the presence of one. Ai and their mother smelled the same, after all.]
Hello.
[He bows politely, as was taught to him as a child. Ruka had made sure both children had excellent manners.]
Uhm... well...
[He wants to explain - who he is, why he's outside of the apartment building. He can still smell his family, the lingering scent in the air drawing him in to them.]