If you're looking for manga similar to Osananajimi to Trunks: Ano Musume wa Honto ni Onnanoko?, you might like these titles.
About Android school (all girl school?) The students are the personification of Gadget/Device brands which use Android OS. The School teacher is Google-Sensei. There also student (boys) from other school: Apple-Kun, RIM-Kun & Nokia-Kun.
Yuusuke and Akira used to be childhood friends, but haven't seen each other in 10 years after Akira's father was temporarily transferred for his job. Now cute Akira has come back and is living next door, and she's looking to keep Yuusuke to the promise he made to her when they were little. The problem? Akira is actually a guy!
A popular guy that's secretly interested in cosmetics asks to practice makeup on his dull childhood friend and he ends up looking cute?!
Ako Kobayashi is a high school girl eagerly awaiting her prince charming to sweep her off her feet, but she has to overcome one small problem: she is so afraid of guys that she breaks out in hives whenever she comes near one. She even rejects the popular Kei Kitaooji who is the first guy to ever ask her out. However, after Kei learns of Ako's condition, he comes to school the next day dressed as a girl and asks her out again.
Just as he was entering high school, Nanaki Koga experienced a certain accident and fell into a deep coma. After two years, he finally woke up. However, he found that the world had changed. While he was unconscious, a sudden craze hit Japan: crossdressing. Now the newest fad, approximately 90% of Japanese people dress up as the opposite gender. And so Nanaki re-enrolls in his all-boys school, in which every student wears a sailor fuku. And as luck has it, Nanaki has a surprisingly feminine face...
Mai's in high school now, and she's just started going out with her childhood friend Yoshioka. However, it feels like that hasn't really changed anything between the two of them. Bit by bit, they try to figure out what their relationship is, and what it means to be more than just friends.
Hashinomoto Maaya has wanted to marry her little brother Rintarou since she was a little girl. Rintarou seemed to feel the same way, claiming that he wanted to be together with his sister when they were all grown up. Now, after going to separate elementary and middle schools, Rintarou is about to enter Maaya's high school! Maaya is filled with excitement for her school life together with her precious brother. But when she finally sees him, she realizes the true meaning of Rin-chan's words all those years ago. He didn't want to marry his sister, he wanted to be just like her. So now, he is beginning his high school life dressed as a girl...!
Uichiro, a junior high school boy, harbors a secret he cannot share with his childhood friend, Tama-chan. He has been cross-dressing for her because she has a phobia of men.