The first draft of the initial concept was written in November 2006.
The first version of this soap was based in a college with these seven friends. Even the first few episodes were also written. At that time, another soap was being made by Eveready called Kollege. To break new grounds, the writer and director sat down thinking. The writer took the same characters, and put them in a bus instead of the college or a hostel.
Shehzore's character was supposed to fall for and English girl over the Internet. She was supposed to actually travel all the way from England and fall for Khayyam instead.
During discussion and development, the writer had six characters (three boys and three girls) in mind. But then the writer felt if the show had an odd number (two guys, three girls or four guys, two girls), it would add more dynamic and improbability to the equation: there won't be any fixed couples. The writer also had Satrangi (Seven Colored) stuck in his head. He thought of the title first and went backwards to characters. He came up with four girls and three guys. But due to casting constraints and non-availability of girls, the production had to settle for four guys and three girls.
During the scripting process, the writer and director clearly knew that 'Fawwad Khan' just had to be part of this soap. This decision was based on an Independence Day play - Kal - that had the same writer-director combo. The only difference was, the director wanted him as Khayyam, the musician. Fawwad being a musician and vocalist already. But the writer saw Fawwad as the driver of the bus: metaphorically, the one steering the lives of the remaining six characters. Driving them together and apart at his own discretion. The writer saw Behzaad as that powerful a character. Mercifully, he was able to drive his point home and Fawwad is now appearing as Behzaad.