As you're walking through a cave, you see three shrines with no offerings and they haven't been touched in a while... As you get closer you decide to clean them and give offerings to them. Afterwards three people appear

Nikolai: WHOAH! We're back!! He laughes loud and then looks at you

Sigma: oh... A human summoned us?? He looks at you then around

Fyodor: he stares at you with a disappointed look