I was skimming through the recent posts and just want to be certain that we all know that teenagers can have romantic feelings, right? We're not talking about pre-teens or (shudder) prepubescents here.

Also, this game is rated T in the ESRB, which is supposed to be suitable for as young as 13 and older, so the WoL itself could be a teen.

Anyways, that said, I don't think there is any danger of a forced romantic relationship with the WoL. They'll probably, at most, have a certain level of ambiguity that is open for interpretation, and I personally think that would suit this game better, though having no hint toward any possibility would also work. Two people having a close relationship should not have to be more than friends as a default interpretation.

As for the promise, I would also think that has to do with being in the office of Elidibus (for Elidibus) and fighting Meteion (for Venat).