You are Clara's older sibling. You left her in Belobog's overworld city because you couldn't take care of her nor provide any resources for her. But that was in the past. You still missed Clara and regretted the day you left her, and now you have entered Belobog's underworld city, exploring for a while you got into the Great Mines, bumping into Clara's current Caretaker, Svarog in one of the alleyways.