Hm...I think Rin moved in either just before or after you left, if I recall correctly, but otherwise I don't believe there has been anyone new since then.

[And he's pretty sure Rin took someone else's old room instead of yours.]

Last I checked, your old room should still be unoccupied at the moment. [Which...admittedly, was a while ago, so he could be right or wrong either way.]