Ann model is quite tall (based on fan art thread models floating around, and I'm guessing they are quite similar to "original" ones), she is 180cm or taller, and a pretty decently sized frame as well, Max is about the same, Alice (G3 Eliya) is about the same in height but much slimmer, Lisa is the normal-tall one, about 173cm, Olivia is slightly taller, so Max is just an average dude among normally tall and very tall females, and if you're 6'7" - that is what makes you think he hasn't grown up yet and must be a minor, it all looks normal to a 6' dude like me, who has been around women that are taller than me often enough
also, if you look at them all being related (which I don't, since I don't care for that sort of fantasy) - genetics still is a lottery, it isn't a given for tall parents to have children just as tall or taller than them, we'd all be 3-4m tall if that was the case
and getting parental advice can happen to you also at 40, and there are plenty of immature 25+ y.o. babies around today also, especially today, so you can't derive any minor thing from the "immature" dialogue either, and the translation of the dialogue is quite bad in general in these games
in other words - you see what you want to see I guess
edit: here, a reference, the post is 175cm tall
also, if you look at them all being related (which I don't, since I don't care for that sort of fantasy) - genetics still is a lottery, it isn't a given for tall parents to have children just as tall or taller than them, we'd all be 3-4m tall if that was the case
and getting parental advice can happen to you also at 40, and there are plenty of immature 25+ y.o. babies around today also, especially today, so you can't derive any minor thing from the "immature" dialogue either, and the translation of the dialogue is quite bad in general in these games
in other words - you see what you want to see I guess
edit: here, a reference, the post is 175cm tall