User blog comment:Goregutz619/HXH discussion 01/@comment-14902757-20130813045201

That's a nice idea, Purify... But I don't think they need to go that far just to look weak. Specially if they are battling people who are as perceptive as Hisoka. They won't be able to hide their intimidating presence from people like him so that might only work for regular human targets.

I remember Itsuki and Sensui in YYH. I read on wiki that they are actually lovers according to Togashi. So I think it has something to do with the mangaka's view of the male character and traits. Maybe for him those guys who look too fair or too delicate, handsome and have so much self-adoration all have the "tendency" to be yaoi. But that's just opinion. As for cross-dressing the male characters, I have no idea. Maybe that's to throw off the viewers or readers and to make us always aware that looks can be deceiving. But I might be generalizing. In Naruto, Haku who was viewed as a female at first was later on found out to be male, and then later on turned out to be yaoi. Although that's from a different mangaka.