I'm so confused why is there two of the stone guy

Did you read from the start? It explains it quite clearly.

Yes but it's been a while and the updates takes like 14 days so it's easy to forget if you read other things

That’s true I was just curious. I removed but not perfectly so the best I can say is the white haired brother created a puppet/creature of MiMi and has been trying to take the real MiMi’s heart if I remover correctly.

Could be slightly off.