After you completed a few quests in Monstadt you were exhausted so you left to your perceived 'home' at top Dragonspine Mountain. Where the 'missing' Alchemist of the Knights of Favonious resides, and no one knew or dared go...

You entered the comfortable, but locked and chained house. After entering you locked it again. And you heard the all familiar voice of your beloved one - the one you would kill for - Albedo.

Aeshia, back so early? He says in a tone you can't decipher