Description:

Tsubasa and Arisa are twin sisters who haven't seen each other for three years due to their parents' divorce. They have communicated through letters, but finally decide to meet each other again. Arisa, the more gentle of the twins, suggests that Tsubasa take her place at school for a day, just for fun. However, there are things about Arisa and her school that she hasn't mentioned to Tsubasa--dangerous things. (Source: MU)

Description:

Welcome to Momoko's waking nightmare. Things were settled. They were! She was SUPPOSED to have gone to a normal school, made normal friends, and led a blissfully normal life. But the universe is just cruelly, irredeemably, monstrously unfair, so instead she found herself thrown out of home, stuck in an all-boys boarding school with a roommate she hates, cursed with a hideous haircut and wearing clothes which, to be frank, she wouldn't be seen dead in. And the only thing worse than her current situation is the one that she'll be in if anyone ever realizes that she is, in fact, a girl. Everything is wrong! Everything! Particularly the fact that, even though she's surrounded by amazingly gorgeous guys, her chances of romance are less than zero. But with life this complicated, something is bound to give. In fact, it just did. Damn. (Source: Storm in Heaven) This title is 21 chapters including the extra chapters.

Description:

Hyun-Bin has been surviving on the streets by hiding the fact that she's a girl. In a tragic turn of events, her beloved little brother dies and Hyun-Bin runs away from the begging, from the gangs - straight into the clutches of a rich family. Her life might have become better but it's far from rosy: she has to undergo strict training every day and guard the family's youngest member, innocent and princess-like Yae-Ha. There are only two rules, Hyun-Bin has to protect Yae-Ha with her life and no one must ever find out that she's a girl. It's a lonely and cold way of life but a fateful encounter with the delinquent Yun-Ha becomes a catalyst of changes to come, where loyalty and a sense of duty clash with feelings of love... (Source: dollie_mixtures)

Description:

"If you were a girl, we would never have met" "Well- to...to be honest with you- I AM a girl-" Plain when she's a girl, but disguised as a guy, she's got a good body, is awesome at fighting and has a handsome face. Despite thinking that Ida is a guy, Kang Naru falls in love with her. Now everyone thinks that Naru is gay, Ida wants to tell him the truth. "What should I do? If they know I'm a girl - " - But at what cost...?

Description:

Tsukushi Makino, a working-class girl, attends an elite elevator school called Eitoku Academy, populated by children from rich, high-society families. She is the "weed" of the school surrounded by all the rich kids including the "Flower" Four (F4). The F4 leader and son of the wealthiest, most powerful family in Japan, Tsukasa Domyoji, takes an interest in Tsukushi, because she is the only girl at Eitoku who doesn't fawn over him. However, his hot-headed nature and bullying ways are originally a major turn-off for Tsukushi, who has her sights set on someone else. (Source: Wikipedia) Volume one contains the oneshot "End of the Century".