Hello Genie Love 28!
We're very sorry for the delay in replying, development was temporarily halted but things are moving forward again. At the moment, we're not sure how much the entire game will cost as the boys may be released route by route! However, we're not looking for this to be expensive.
And thank you so much for your support! The prologue has been changed slightly in some ways and - we hope - better than the previous one.