Keiichirou Mishima is a 15-year-old guy living with his mom until she suddenly decides to fly to Paris to be with Keiichirou's dad. His mom arranges with his uncle Shirasaki to let him stay at his mansion with his two cousins Marie and Tomari, who he met many years before when he stayed with them for a short while. However, Keiichirou has forgotten nearly everything about back then, including why his cousins apparently now hate him.
From MangaHelpers: Muto Yuzuki was ready for a whole new life and a different self when she got to middle school but she didn't expect it to be literally torturous. Yuzuki is “persuaded” by an upper classman named Funaki Aoi to join the Torture Club on campus which has been secretly training students to enter the field of military and police organizations as interrogation experts. Aoi sees something inside Yuzuki and thinks she might be a prodigy in torture methods. Naturally, Yuzuki wants nothing to do with such vulgar conduct but the more she spends time with the club, the more she starts to realize her own dark potential. [vyc]
Reiji and Kasuga head out to Tokyo to become the "Gods of Rock," but they seem to always attract trouble. On their way, Hayama Ryo and Fujii Ran join them in their quest. Despite its rockstar type look, this manga really is about action.
Set in feudal Japan, Sorano is often mistaken for a girl, and he is saved one day by Iori from some pushy guys; the two hang out together the following day.
From Sapphire Sky: Saijou Kiki is a model and child star, but with the release of her new commercial, her popularity skyrockets. At school, she harbours feelings for Takumi-kun... but she somehow ends up kissing Teppei, his friend?! And what's more, they've switched bodies due to some sort of old legend?! From Chibi Manga: Everyone is talking about Saki since she acted in her first CM. She's in love with Takumi, who's in the neighbor boys high school: Sashirou High school. One day, she fell in the stairs and incidentally kissed Teppei, a student of Sashirou High School. That's a big shock! but something started to change inside them...
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. (Premiered in Waai Mahalo)
Story about a tomboyish girl Subaru who's always cast in male roles for school plays and her subsequent confusion over her neighbour, Shun.
Miyano Amata, known as the "Perfect Prince" for his intelligence, looks, and cool personality, is asked to substitute for his sister as an attendant at a doujinshi convention disguised as a loligothic girl. There he meets a girl from his class and they become friends, but he must crossdress in order to be with the girl while learning about the fujoshi fandom. (fudanshi = BL fanboys. Some may be gay, but most are straight. More info can be found here. fujoshi = (literally: rotten girl) a pejorative Japanese term for female fans of manga and novels that feature romantic relationships between men, often with the implication of Yaoi concept.)
From Okazu: Mermaid Line is a collection of stories that ran in Yuri Hime magazine. They are collected together as short mini-series, done in an episodic, almost soap-opera-y way. In "Megumi and Aoi " Megumi confesses to her friend Aoi that, despite her ungainly swimming, she feels as if she is a mermaid. Aoi finds herself fantasizing about being the prince to Megumi's mermaid, but Megumi runs to the arms of a boy, trying to put a beard on her feelings. Ayumi, in "Ayumi and Aika," wants to get married to her boyfriend so naturally, she's shocked when he tells her that he wants to become a woman. "Yukari and Mayuko" are both OLs. Mayuko's between boyfriends and bored, so she asks Yukari to pretend to be her girlfriend. It works out well, until Yukari realizes that her feelings for Mayuko are more than just pretend. And finally, in "Miura-san and Me" Okabe loves Miura's beautiful hair. When Miura-san cuts it all off, Okabe learns to love her for herself.
Description [Edit] summary by Divine Sanctuary Sapphire was supposed to be a tomboyish junior high school girl who's not interested in boys, but it all changed on her 14th birthday. Not only did she find out that she's princess Sapphire, the Ribbon Knight, but she also has to protect a country called Silver Land!? Based on the original work by Tezuka Osamu. Read this manga from right to left
Tsuyomaru is a girlish boy while Hazumi is a tomboyish girl. Tsuyomaru is challenged to a fight by a student of another karate school, and while using a training machine operated by Hazumi, something goes wrong and they switch bodies...