you can achieve what you want with both. but for me, the obvious choice is Aspnet core. the main reason is being the easiness of writing code in a multi-threading manner & ORM. the Django ORM is ugly as hell that I don't even want to look into its code. I did a couple of projects with Django and I wish I never did it. the amount of nuances was so much that after we delivered the projects I rejected any new Django project. I know people still using that and getting projects done but it's not a clever choice when there are easier choices out there.

moreover, after the latest upgrade, the Aspnet core 3 is the fastest and best of framework in 2020.