It's a series where the plot is about a tournament to determine a queen, WHY would they put men in this series? It makes no sense. Not to mention, it's actually based off of a battle RPG. Throw in the fact that the anime is the most explicit the series get. There is no nudity in the original books, nor in any of the spinoff mangas.
Also: Season One is just Leina's journey. Season Two is the tournament proper. The Rebellion arc anime of the original books will premiere in Japan in April.