Good Question!

All Hypers eventually reach a point where their growth slows down or stops completely, whether it be due to their age or their base size growing too large.

In the case of Mei and Renée, their base sizes have grown so large that they’ve reached the point where they cannot grow any larger unless their growths are reawakened in some way, such as experiencing a rapid shift in hormones or getting pregnant, as those are what initially jumpstarted their growths in the first place. In the case of the other option, most Hypers’ growths begin to slow down dramatically, even stopping entirely, when they reach a certain age, typically in their middle years, so it’s only a matter of time.

As for Eden, based on the fact that her base size is growing a foot or two larger with each passing year, due to how her growth works, it’s more likely that her growth will slow when she reaches a certain size, so it will take roughly 5-10 years for her growth to slow down.

By that time, her backside with be rivaling Renée’s gut, perhaps even larger~