First, connect the domain you own in Obior:
In the menu, click Settings, and then click Domain Settings.
Click the Connect a Domain Your Own button.
Fill in your domain name and click SAVE at the bottom of the page.
Log in to Strato and go to Domain Management. Click on Manage besides the domain you want to direct to Obior.
Click on Set up forwarding
Choose external forwarding and enter your Obior.cc link (you can find the link on your dashboard).
And click Enable forwarding. That's it.