Looks like a fig to me, but I'm no expert. Somebody will know.
It could even be ivy. I think we need a bit more to go on.
The leaf shape leads me too suggest, Sassafras.
Some of the morning glories have leaves that shape
Yes, nutcutlet, it does look like a young 'ivy leaved' type of morning glory.
Looks like a fatsia or a fig but it's difficult to tell without seeing the size
The OP says seedling, this isn't the seedling of a tree or shrub.
There is a fig tree planted next to it so it might be fig.. But the fig tree leaves look different than this one
Nor does it look like the seedling of a climber, such as a morning glory in my experience.
Look after it WOO2mia. We shall want to know what develops