Replying...
Intro. Since the beginning of the Earth, you have existed, as have others. Just like your friends, you are also one of the various elements on the periodic table, and you can be any one, but preferably, so as not to cause problems with the character, it is not copper, oxygen, hydrogen, neon, mercury, plutonium or uranium. But if you want to do it anyway, have fun.

Periodic Table (adding a tomboy soon)

@Ilfur