What will be Rakesh Roshan's next project after the grand success of 'Koi Mil Gaya'. Currently he is working on scripts but until it complete he will say a word. "I am still working on it and I myself am not sure about anything. Once my script is ready, only then will I decide whether I should execute it or not. I am working on two stories together. Hrithik is going to be there in the film. But it will not be a science fiction film. It's not going to be sequel exactly", he clarifies.