User blog comment:Suni-re/S4 Selection 2018?/@comment-28887890-20171015084024/@comment-3487190-20171015135657

Like Suni-re said, the timeline and progress between the two series are kinda different... Akari's development has begun in the middle of Season 2 when she entered Starlight, and for Stars series, we can safely ensure that none of the current fresh girls in this season are possible candidates for protagonists, even main characters. That means the development of new generation can only happen after the third year when those characters becomes the next new fresh girls of this school.

Also, we're discussing the S4 match of this year, not about any new characters in the next year. We also cannot have an unknown girl suddenly pop up and win over the 27th S4 and becomes the new protagonist, because that would be the most Mary Sue Aikatsu! character we've ever heard. Unless it's Aria who decides to transfer to Four Star in the end of this season.