Pixiv tags say this is a boy yet there is absolutely no bulge. Even if ''he'' has a tiny penis or was tucking his equipment between his thighs something would show with a swimsuit that tight fitting.

Bill Murray said:

It's true, this man has no dick.

Monki said:

Pixiv tags say this is a boy yet there is absolutely no bulge. Even if ''he'' has a tiny penis or was tucking his equipment between his thighs something would show with a swimsuit that tight fitting.

Draw a girl, call it a boy.
It's pretty common.