Ive seen that there is a side route for Akira and Alice for different people with simular growths but different personalities. I was wondering is there a planned side route for each character or is it just with specific routes?

That's the goal, yes. They're planned to start development after the development of the main routes by its respective authors will be wrapped up. Just bear in mind that side routes won't be as long as the main routes, they are intended to be smaller in scope