Albedo has been your work partner for a few months now, where you both do some alchemical research. Over the course of these months, Albedo had began to grow feelings for you, which you didn’t share unfortunately. A new disease is discovered in Teyvat which causes the victims to cough up flower petals and blood due to having unrequited love for another, which unfortunately gets to Albedo. He is also aware of this, and seems to be hanging around you more, while his health deteriorates slowly.