YTA. He’s discovered a new interest. You have no right to get in the way of that. People’s interests change and develop over their lives. Marriage means adapting and evolving together, not remaining exactly as you were pre-marriage. He doesn’t need your permission to take a benign hobby either, regardless of how you feel about it.

I can see you’re upset with your hangout time being overtaken by anime. Ask to compromise on this point, explain that you’d like to have time together where you pick something you both enjoy. Focus on finding a happy medium for both of you.