Cute.Chen-Marisa hybrid? Interesting. I wonder how it's done...
Thinking about it with it being a black cat this might be more a Marisa-rin than a Marisa-chen.
Rin and Chen each have two tails. This could just be a Marisa-Cat.
It's Marinya (Japanese post #19049) or Meowrisa (my proposal for its English translation).