Ever since they were born, the twins Maria and Noel have always been together at school and home. But when Maria falls in love with a boy and transfers to Morinomiya Junior High Boarding School without telling him, Noel is angered that another guy could come between them and decides to follow his sister and enroll at Morinomiya himself. However, there's a catch: with only one vacancy remaining, Noel will have to live life as a girl and stay in the female dorm! Now Noel is living as Maria's twin sister, much to her disgust and annoyance, and is making her life as difficult as possible. Between his friendship with the most popular sophomore in the basketball club and worrying about his roommate Miyu, will Noel still be able to achieve his goal and bring Maria back home?
Mizuki Ashiya is a teen Japanese girl growing up in the USA. After seeing Japanese track star Izumi Sano on TV one day, she became instantly enamored with his grace and style, and became determined to find him and confess her love. She's able to transfer to his all-boys school by hiding her feminine identity, and finds herself as his roommate in the process. However, while the rest of her classmates simply suspect she's a very girly boy, Sano sees through her façade in time, and together they must try to keep Ashiya's true gender a secret. Now, Ashiya must not only try to confess to the man she loves, but also help him work through his personal issues and keep her secret safe from the school in the process!
I think that you'll like this manga as well since it's also gender bender, and has a lot of funny and fluffy moments as well. Also, both principal character are kind of similar (stubborn, and sometimes don't realise that they're posing as a girl/boy).
Hana-Kimi and Mint Na Bokura are two very funny gender bender mangas. Though Hana-Kimi is a bit more serious, and though the main Hana-Kimi's character is a girl and Mint Na Bokura's a boy, they're pretty similar.