Anime can be flexible in terms of character genders. To confuse the fans and make the story more interesting, the authors usually include "Traps" characters in their story.
But first what is "Traps"?
They are anime characters that dresses and behave as a female but they are actually male. You can also call them crossdressers deceiving people by showing opposite gender of its own.
Traps are interesting characters because you will actually think they are females until they confess that She is actually a He. And here's the example of famous anime traps.
Ruka Urushibara
Stean;Gate
You'll never expect that she is actually a he. His face and body looks very feminine and guess what he also thinks that he is actually a girl. I actually love this character especially in Stein;Gate 0. He is willing to sacrifice his life for Okabe and I really admire him for that.
Haku Yuki
Naruto
I love this arc in Naruto. The story of Haku and Zabuza is a heart breaker. And believe me I've fallen into this trap at first. I really thought that Haku is a girl (well look at his face). Maybe the first trap I've seen and the first time I've got trust issues especially in anime gender.
Astolfo (Rider)
Fate/Apocrypha
Forget being a trap but this character design is very extravagant (as expected from Fate characters). Astolfo's role in anime is also good. He always support and give motivation to his master. Its so funny to think that this character is based to a person known for being womanizer. Well he is famous despite of the anime unpopularity.
Felix
Re:zero
Traps have been greatly improving, now they have cat ears. With his feminine and feline looks, he usually teases other people. But still he is a good mage especially in water and healing magic. He is loyal to his master too and will do what she asked. And of course he can disobey too if necessary.
Totsuka Saika
My Teen Romantic Comedy Snafu
Very feminine that people really think that he's a female. Even Hachiman occasionally forgot that He is talking to a boy. Saika is the captain of the tennis club and he is popular to boys too. He is still a good side character in the story. Hachiman always relied on him especially in times of problems.
Hideri Kanzaki
Blend-S
My favorite character in Blend-S. He dreams to be a singing idol (yet he never sings). His character funny and always meddle into the problem of manager. He is very picky in choosing clothes and usually teases the manager until he is told as being cute. He makes this series more funnier.
Marulk
Made in Abyss
Who would have thought that he is a male. If you've watched the anime you would've think that he's a female. The way he dresses and his hair style is definitely girlish thats why I can't blame you for thinking that he is a she. Now you know. (Hahaha)
After watching anime with so much traps you will definitely have a trust issue. Looks can be deceiving and anime can be diverse. You'll never know what will happen and that's what makes an anime more interesting.
I definitely don't know if traps are gay. The debate are still on and I don't really care. It might be awkward to watch but we can't ignore the fact that they make the anime more interesting.
Haku yuki really got me good🤧