Hmm...maybe I could find something cute to hang from it whenever I go out into the city properly. [It's a very serious consideration that has Ren gazing upwards thoughtfully as he puts the key back in his pocket.

The implication that it might be worrying that Ren can't remember where his room was has him looking rather surprised, though, before he waves a hand.] Oh, no, it's fine, I get lost all the time. I'll figure it out eventually.

[This may not be the reassurance he thinks it is.]