Here I've made an art showing the body and age maturity of Juninho (my sona) and here is some info.

9 to 10: Juninho was a good kid overall, happy and loved to play with his friends and action soldiers but he started to show crude humor way early. This time he met Paulinho and Elmo at his school and both became friends, going on trips together and camping. Playing video games and doing stuff they shouldn’t, especially when Paulinho was involved. The supposedly pranks were too much and they always were punished with beatings, at least Paulinho were.

13 to 14: Puberty hits, body changes and as any other boy would, during this period. new and uncomfortable about his body and identity but necessary, sadly is also when he started to notice that his body wasn't like the other boys, family started panicking and boys at school did a heavy bullying on him. checks on the doctor revealed his condition as a futa, gender dysphoria and mood swings hit hard.

15 to 16: At his lowest in terms of emotion, increased depression and self loathing, kind of an “emo/goth phase” wearing black or darker clothing with skulls or morbid themes, also in music and in movies. This time his high libido and testosterone made him lash out on others easily, creating tensions with his own parents and avoiding some friends, becoming more reclusive. He spent his time watching porn n jerking off or playing fps games like call of duty, this time is when he becomes more interested in cinema and arts in general as he starts to watch old movies from the 80s and have this strong motivation to imitate them, normally war themed plus that was the time that he got into history and ww2 films and documentaries.

17 to 23: Finally, his current situation. Hypersexual, confident and short temper but the leader of his friend’s group, also physically stronger which is a blessing and a curse. Yet he still suffers from depression, self loathing and gender dysphoria, which makes him act more manly around his peers however, despite the struggles he is still standing. With courage and a sense of justice.

If you wanna know more about the futa contidion in my lore, go here in this post
https://derpibooru.org/images/3723984