Coming up in my garden right next to some forest (primarily oak mixed with beech, birch, maple) in southwest Sweden. Last year i dug the area out and removed (most) roots. Not much came up but this little sprout. I suppose it could be roots reaching in from the adjacent forest.
I'll second this. It grows in early spring, the stem will "split" into two large leaves and a stem with white little bell-like flowers, and later red berries.
Very common in the entirety of Sweden iirc, my mom used to pick a small bouquet every spring which she would put in a glass of water.
It's very pretty and smells wonderful, but the entire plant is poisonous so be sure to wash your hands after touching it.