Hi Annibale16! Aren't you the one with the new cat, Madeleine? Hope she's doing well.

Have you tried having Angus stay with you in your new home? Maybe he just needs time to adjust. How long did you live with your parents? If it was long enough, he might believe that that is his home. Given love and patience (and maybe bribery, i.e., treats or a new bed), he may want to stay in your (his) new home. If not, then I would respect his wishes and let him live wherever he is happiest. You didn't say whether or not your parents minded him being there. That could have a lot to do with what you should do. Good luck!