Forget translations. Forget appearance. Forget evidence. Use common sense. Every youth ninja team is composed of 2 BOYS and 1 GIRL. No exceptions. It's the first thing everyone in the world should have recognized. It's academy regulation. Two guys, a girl, and a ninja teacher. Sai is replacing one of the two males of team 7. Sai is replacing Sasuke. Sai is a boy. You're all morons. Someone prove me wrong and I'll never post in these forums again.