If you're looking for manga similar to Mission in Harem, you might like these titles.
Kaga Maki, 26 years without a lover, a plain office lady. One day, her twin brother, Miki, whom she hadn't heard from in a while, appeared before her, asking her to substitute for him in an all girls school as teacher. Maki then quit her job and cut her hair to take on Miki's appearance. But what is waiting for her?!
Awaya Yukiguni met a girl named Isuruga Mitsu and fell in love with her at first glance. Later, he learned that Mitsu is commuting in an all girls school, the same school that his sister attends. So in order to approach and become closer to her, Yukiguni decided to attend the all-girls school in place of his twin sister.
Awaya Yukiguni met a girl named Isuruga Mitsu and fell in love with her at first glance. Later, he learned that Mitsu is commuting in an all girls school, the same school that his sister attends. So in order to approach and become closer to her, Yukiguni decided to attend the all-girls school in place of his twin sister.
Jeong-Hwan received a letter from his sister Ji-Yeong that said, "Please rescue me, the devil is here!" His sister goes to an all-girls school and in order to rescue her, he must disguise himself as a female student. In this school, all students are candidates to become "the bride of the devil."
For all of Mao's life, she has longed to be girly and have tea parties with beautiful girlfriends. And finally, she has that dream right in her reach, until she walks in on three boys changing at her private all girls school... What's a girl to do when another girl she admired turns out to be a guy?!
Yuuma Yamabuki has just moved to a new town where he meets Laira, a cross-dressing boy who asks for Yuuma's help. Yuuma must cross-dress to follow Laira back to his all-girl school where he meets the others in the Girl Research Society.
Nanase Hina is a girl with an androphobia. She's very happy that she's finally able to enroll in Seika Girls Academy and even became roommates with Yukino Kaede, whom she thinks is the ideal girl; beautiful, refined, and perfect. Except... Kaede is actually not a girl
Yuki's problems begin when he finds himself enrolled at his twin sister's girls' highschool.
Raised in the hope that I would be a boy full of courage and strength, they named me "Yuu." To be a girl filled with kindness and love; that's how my twin sister, "Ai," was raised. That's how our parents named us- But... Our parents' wishes were reversed. A story about twins who risk everything to protect one another and to find his or her happiness in the switch they call twins game.