Is it okay for a guy like me to enter? Presumably the Ōoku, the cloistered women-only quarters of Edo Castle. It houses the Shōgun's harem, female relatives (and acquaintances of special note, like Kasuga), and children (including male children before coming-of-age).

Please, do not inquire about that. This Lady Kasuga... ...shall do her utmost to put up a facade so as not to see any— Old-fashioned keigo (polite speech).

—thing...

Shudō, "Way of the Boy (Love)", practices of homosexual behavior between an older male (usually a samurai, monk, or kabuki actor) and a younger one (usually a peer or junior) in pre-Meiji Japan. Also can refer to artistic/literary depictions of such works. In short, 'medieval' Japanese pederasty.

I have absolutely no interest in such proclivities. Sodomites and Ganymedes be not the same thing. Original uses somewhat (mock-)archaic grammar (but not vocabulary).