Loquat. Needs a bigger pot.

and needs to be outdoors in a temperate climate, in full sun.

I don't think that will fruit next year I see no flowers on it. Loquats typically flower now and fruit very early, before any stonefruit. Probably a seedling too but I never had a loquat I didn't like.

https://www.crfg.org/pubs/ff/loquat.html

If it was planted from a seed it may never fruit.

The leaves make an excellent tea. It will clear up your bronchial passages.