Translation has gone downhill
Fu Jiu appears to be a normal lad in high school on the surface. But in fact, she (Yes! She!) is the hacker, Z, a villain-terminator in the online world of an alternate world. Having reincarnated into the body of a woman and being forced to disguise herself as a young man, she reigns over the game world, fights for justice, and puts a spell on all the girls around with her innate charm.
“Do you want to live as Estella instead of Estien?”
A member of the famous Arthur family that possessed skilled swordsmanship which went into ruin, Estella.
Disguised as the male Estien she lived as a regular knight, hiding the exceptional talent she inherited to avoid discovery, but one day the crown prince makes an unexpected offer…
After Seo Yuri gets into a car accident during a trip back home, she reincarnates into the novel, "The Song of the Moon," and becomes the elder twin sister of a side character who meets a destructive ending- Selena. Selena hopes to prevent the destruction of her family, however, she is forced to take the place of her runaway brother, Celestine, in the knights’ squadron!
Lindsay is a top-secret spy about to take on her most difficult mission yet: to disguise herself as a man?! Her target is the Duke. Rich, mysterious, and… an infamous womanizer. Cutting her hair, drinking elixirs to hide her voice, as a servant she must infiltrate his manor and investigate the mysterious disappearance of lords and ladies in the area. However, when she meets the Duke for the first time and he kisses her, is it her identity that's compromised or her heart…
To Chie Souma, a female college student, every day feels depressing when she has no luck with job hunting. She’d much rather end up in an alternate universe. Just as she was dreaming of escaping this reality, one day she actually trips into another world! It might be too dangerous in a female body to survive in this world. Chie decides to use the knowledge that she’s gained from reading, lie about her gender, and become Souma the Scholar
Yeon Lokheun is a girl who grows up living as a boy learning martial and spiritual arts. She heads for the palace in order to clear the name of her father, a wanted criminal, where she meets the young Emperor Garyun. He promises to save her father's life in exchange for her lifelong services. After gaining Garyun's trust, she travels the world solving supernatural-like problems that arise in place of the Emperor.
Disguised as a man, Lu Dingning picks up a bunch of girls, with her gentleman index on max and her prince charming smile leveled up! Women are constantly surrounding her and men are getting mercilessly bent in her presence.
Pauliana has been defeated and captured by the army of the enemy nation, Acrea. She has been desperately trying to survive in men's society, but it was all in vain. Acrea's young king, Lucius, sees her struggle and makes an unexpected offer. He dreams to continue the war and be the first emperor to conquer the South continent and it's sea. Pauliana, swears a life-long allegiance to Lucius for acknowledging her.
Kuji Akira and Ninomiya Makoto have been neighbours and friends from childhood. Akira-kun is handsome and Makoto-chan is pretty but Akira's a girl and Makoto's a boy... Their feelings for each other are growing more complex just as they are finding themselves the focus of romantic interest of their friends and acquaintances.
Haruka, who got summoned during her high school year to another world had become a magician and got herself enlisted in the army, so she had no choice but to crossdress and proceed to the battlefield under the alias "Haruka Clark". She killed people per command, and to soften her sense of guilt, she continues to heal people? And during that extreme situation, she met a golden knight named Ricardo and Haruka feels angry as he's trying to use death to escape from reality.
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You might like 9000 year old empress if its not on the list
https://www.mangago.me/read-manga/lady_crystal_is_a_man/
You can add this to both of your lists!
I have some suggestions (if u don't mind me sharing lol) [Ouran highschool host club] FL is also androgynous and [Gekkan shoujo nozaki kun] also has a side character that's a female crossdressing as male....u should check them out!