Description:

Suzushiro Mizuki is a 1st year high school student who has the difficulty of constantly being mistaken for a girl. It's so bad that he's endlessly rebuffing the confessions of many men. Even the girl he has a crush on seems to think of him more as one of the girls rather than as a potential love interest. Meanwhile, the trickster god Loki has grown bored with playing her tricks on her fellow gods. Turning her attention to the mortal world, she targets Mizuki for her next round of fun. The result: Mizuki wakes up with budding breasts and a missing part of his anatomy. What else is in store for Mizuki and how will he deal with it?

Description:

After losing a bet, Tao Nozomu's baseball team is forced to dress up as cheerleaders and cheer for their rivals, the Titans. However, after the bet is all settled and done, Nozomu finds he likes crossdressing almost as much as he likes baseball. Despite interior conflict with such desires, he tries to give it up; but one day, he discovers he's turned into a girl?! (Source: MU)

Description:

Manaka Makoto, 24 years old and a salaryman without a girlfriend, wakes up one morning suddenly changed into a female, and a knockout at that who attracts just about everyone of the opposite sex. And when he learns through a magical being that the only way he’s going to become male again is by getting aroused (as a woman) he tries to find a way back without any success. But when success finally comes and he switches back, he discovers that he will switch back and forth ANY time he gets close to someone sexually, and there are exceptions… (Source: Animeraider)

Description:

Gengo Kurosaka leads a normal life until a run-away alien called "Six-eyes" decides to take refuge in his body. From then on, Gengo becomes Ishtar's target, a beautiful alien in charge of making sure the aliens don't turn planet Earth into hunting grounds. Gengo has now to learn to coexist with his parasite to stay alive...

Description:

While on his way to school to confess his love to classmate Kusanagi Mikuru with a love letter, high school ninensei (2nd year in highschool) Takatou Iori gets run over by a truck to save a cute elementary ichinensei (1st year in elementary school) schoolgirl. But when he wakes up, he's revived by a perverted doctor, as a full fledged female elementary ichinensei student and is now in the same class as the girl he saved. (Source: MangaHelpers)