The current default male template is indeed modeled after a full-grown adult body. Maybe next time we will add other which is designed towards teenager body shapes.
If I could suggest something off this, I think it would help if the default face for the male character better illustrates this intention? Because the default face is pretty boyish compared to the body, and the male expressions don't particularly give an "adult" impression on their own.
With the previous art style the defaults looked roughly the same age, but when the default female is a young high school student at best, I think it's understandable folks would assume the male is intended to be the same since there doesn't seem to be anything suggesting otherwise.
So, hrm. Possible solution: Maybe make the default hairstyle balding or something?
We'll see. Thanks for the suggestion! We do understand the underlying reason of wanting a similarly 'aged' templates. We'll try adjusting what's exists here and there, but we think providing multiple templates will be the best option in the end. Some wanted the male template to look younger, and others wanted to make it look older. Some wanted a shounen manga aesthetic, and others wanted shoujo manga aesthetic (with tall, skinny, beautiful guys). We'll try our best to accommodate each of those aspirations.