Hey, I found out how to edit the ages and it should go from save to save, just because the author can't have the ages be what they clearly are doesn't mean YOU can't. You can use URM, you can find it
here.
After you add it to the game, open it and in the search tab by default it should be on "variable names", search for "_age" then go to the second page and you should see the name "classB_age" and the variable should be 18, I believe the author's original idea was to have it be 2 years younger than Suzie's age, modify it to your liking then if you look a bit more you should see "suz_age" and that one is the other important one, all the modifiable ages were based on those 2 (at first it was only Suzie's age that would then modify Class B ages but it is what it is)
Also you could modify all ages there, make your mom be 30, who cares lol.
Here is a picture of my version to illustrate and show you the places to click and the important values to modify, the places where they should be could be different since it depends on how many characters you've met but they should all be in page 2, at least with the amount of characters we have to date.
Hopefully this helps so that everyone can stop beating the author down, I'm sure they had an idea that includes lolis but for whatever reason it couldn't happen, it sucks that they couldn't make it happen the exact way they liked it and I'm sure that they are the ones suffering the most by having their artistic expression be policed, so just modify your shit and enjoy it since it's a cool game.