Going by the name Dunbalf, he’s known across the land of this virtual world. But one night before bed, Kagami uses an in-game vanity case that’s about to expire—opting to create his ideal version of a female Dunbalf avatar for fun.

Waking up, he’s surprised to find that he’s now in the body of the avatar he created the night before, and he’ll have to work his way from the bottom up! So he’s a young dude, playing an old dude, who is now playing a young girl—who is still that old dude.

[Source: Funimation]

Childhood friends Tachibana Hinata and Jinguji Tsukasa were living the everyday life of office workers. Then, on the way home from a mixer, they were sent flying into another world by a mysterious being. Once there, Jinguji sees his best friend has been turned into a beautiful blonde-haired, blue-eyed girl...?!

The adorableness of Tachibana’s female form completely flummoxes Tachibana. But these two are each others’ best friends. To keep their relationship from being destroyed, they must defeat the Demon Lord as quickly as possible and return to their original forms.

[Source: Crunchyroll]

Recluse Mahiro would rather lose himself in his video games than venture into the outside world. After emerging from his cocoon of a room, he’s shocked to see a teenage girl staring back at him in the mirror. What did his younger sister Mihari do to him? Mahiro should be angry, yet he’s curious about this second chance at life. Can he soar in this brave new world? He’s intrigued to find out!

[Source: Crunchyroll]

Waking up transformed into a beautiful girl might be the stuff of some guys' fantasies, but when the suddenly effeminatized Natsuru is informed by a stuffed tiger that he's now a Kampfer, a mystical fighter who has to fight other Kampfers in female form, his life becomes a living nightmare!

Putting aside the obvious "plumbing" issues, Natsuru's best childhood friend turns out to swing the other way and SHE has a crush on his new female body. Not complex enough? Natsuru's school has separate sections for boys and girls, so he and she are now double enrolled. The rumor-mill has it that he's dating herself. And there are other Kampfers attending the school who want to take her out, and he's not sure which ones mean "on a date" and which ones mean "permanently." Oh, and did we mention that some Kampfers use swords and guns?! Hormones, fists, and other body parts will fly as the daring, new gender-bender defender must become a contender or die!

[Source: Sentai Filmworks]

Kazamaki Matsuri is an exorcist ninja who exorcizes evil spirits called ayakashi. His childhood friend, Kanade Suzu, tends to attract ayakashi, so he secretly protects her from them. But now Suzu has caught the eye of Shirogane, an ayakashi who looks like a cat but rules over all ayakashi as their king!

[Source: Crunchyroll]

Soji Mitsuka is an ordinary high schooler with an extraordinary obsession. Twin tails are his fire, his air, his will to live! But when a mysterious woman from another world enlists his help to fight hideous monsters with various moe fetishes, Soji much transform into a powerful pigtailed…girl?With the help of his childhood friend, the class president, and his endless devotion to pigtails, Soji and his crew form a twin-tailed threesome to take on the monsters who feed on the “attribute power” of humans. But Soji’s new pigtailed powers come with a price; his surging popularity as the new heroin in town makes the twin-tailed trend explode, giving the monsters ample attribute powers to feed upon!

[Source: Funimation]

A group of 3 yakuza failed their boss for the last time. After messing up an important job, the boss gave them 2 choices: honorably commit suicide, or go to Thailand to get a sex reassignment surgery in order to become "female" idols. After a gruesome year training to become idols, they successfully debut, with overwhelming popularity, much to their dismay. This is where their tragedy truly begins.

[Source: MU; emended]

Saotome Ranma, a teenage martial artist, and his father Genma travel to the 'cursed training ground' of Jusenkyo in China. There, despite the warnings of the Chinese guard, they fall into the cursed springs. From now on, whenever Ranma is doused in cold water, he turns in to a girl, and a cute, well-built red-head at that. Hot water changes him back into a man again, but only until the next time. To make matters worse, his father engages him to Tendo Akane, a girl who hates boys.

[Source: Anime News Network]

"Love makes a girl stronger."

Saki Uno is working hard as part of the new idol unit, Magical Twin.

The one she admires most is Mohiro Mikage, who’s the older brother of her idol unit partner Sakuyo, and he’s also a member of the top idol unit STAR☆PRINCE. She would be willing to do anything for him, and one day, those feelings brought on a miracle. Saki ended up turning into a magical girl when she strongly wished to protect someone... But what she turned into wasn’t exactly what she was expecting...

A two-episode special. They are designated as Episodes 13 and 14, and the first episode is a direct sequel to the previous series while the second episode is about the trans-sex of Natsuru.

[Source: MyAnimeList]

"But I'm getting pretty excited, thinking about doing a female Shion."

I'm dripping wet down there, thanks to my best friend's touch... Has he always been so good at sex...!!?

[Source: Coolmic]

Hazumu was a shy boy who enjoyed gardening, collecting herbs, and long walks in the mountains. One day he finally worked up the courage to confess his love to Yasuna, but she rejected him.

Depressed, he wandered up Mt. Kashimayama, the place where they first met, to reconsider his feelings. After getting lost, he wished upon a shooting star and received a bizarre twist of fate.

Now he is a she, and she stumbles headfirst back into social life and relationships only to find that the entire landscape has changed!

[Source: Media Blasters]

The Mizuchi bloodline has long been hunted by Yokai, or monsters. Toru and Noboru Takagami are descendents of this bloodline, and under their grandmother's discretion, are given a secret weapon to combat these monsters. It is Tenko Kugen, a fox deity who can take the shape of a man or woman at will. The mischievous deity is accompanied by a shrine maiden, Ko, who will both live with the Takagami brothers at their house. Life just got complicated.

[Source: NIS America]

Ranma Saotome continues his search for a way to become a normal teenage boy again. He gets into many hilarious situations involving the many girls in his life. One of the biggest challenges is overcoming the proposals from others who have found a suitable bride for Ranma. But he has his own worries and must muster up the best of his wits and martial arts to keep his sanity. It's not easy being desired by so many women (and men) and not breaking hearts of a few along the way. He just might be able to find it in his heart to confess to Akane or simply find another excuse that he can't marry such a tomboy girl.

[Source: Anime News Network]

Megumi-chan is a girl with a secret past. She used to be a boy until she met a person she thought was a magic user. This person gave him/her a magical book from which a genie appears to grant one wish when blood is applied to it. Megumi made the wish to be a man in a man's body but the genie has a twist: he grants wishes backwards so he turns Megumi-kun aged 9 to Megumi-chan. Years pass and Megumi enters High School where she immediately beats up the school bully who of course falls in love with her. She is looking for that book again to be able to reverse the spell placed upon her.

[Source: Anime News Network]

All is well at the Tendo residence when from out of nowhere, a Chinese girl named Lychee appears, seeking revenge on Happosai for a broken promise made since her birth. Things get worse when Kirin and the Seven Lucky Gods appear and abduct Akane to take as his wife. Ranma and the gang must travel to Nekonron, China, and save Akane from getting married to Kirin.

[Source: Anime News Network]

Ranma and the gang are invited to a boating trip with Kuno. Unfortunately, a storm destroys the yacht and everyone is stranded on a remote island. The whole situation goes even more awry when one by one, the girls disappear without a trace. Ranma then finds out that the girls are abducted by Toma, ruler of the island, as part of his personal harem.

[Source: Anime News Network]

"Reawakening Memories" deals with Akane suddenly remembering a trip to Ryugenzawa when she was a small child. While there she was saved from a giant platypus by Shinnosuke. Akane travels back to Ryogenzawa and once again meets Shinnosuke, who falls in love with her. Akane blames herself for Shinnosuke's life-threatening injuries, and decides to stay and help out. This irritates Ranma, who thinks that Akane has fallen in love with Shinnosuke, and will do what it takes to get her back.

Bong Gi used to have dreams of making something of his life. But now all that seems like a distant memory. He has become fat, lazy, unemployed, and altogether unlovable. In the real world, people are grossed out by him. He has never had a girlfriend and he spends his late nights fantasizing about women whose pictures he leers at on the internet. His own life appalls him, but he has one escape – his online life. Gaming has become his everything, and he excels at it.

After another long, lonely night of gaming, he wakes up – and is shocked to find that he has transformed into a woman. Or to be more precise, a woman who looks a lot like those he used to lust after online! Confused, he does not know where to turn – so looks for answers on the net. He encounters a young woman in a chat forum named Sae Mi, who offers him advice. He soon falls for her charms – which makes things complicated to say the least. And things get even more bizarre when he attempts to take revenge on Sang Woo, a school bully who turns out to be Sae Mi’s older brother!

[Source: Viki]

Twelve years after the final OVA was shown, and the end of the manga, a new piece of Ranma ½ animation was made for the "It's a Rumic World" exhibition of Rumiko Takahashi's artwork. The new 30 minute special is based on the "Nightmare! Incense of Spring Sleep" manga story from volume 34, and was shown on odd numbered days at the "It's A Rumic World" exhibition in Tokyo from July 30th to August 11th.

[Source: Wikipedia]

This is an OVA released on October 27th, 2006. It is also classified as the 13th episode (thus a sequel) to Kashimashi ~Girl Meets Girl~.

Hazumu confessed his love to Yasuna, but she turned him down him. To ease his heartbreak, he went to Mt. Kashimayama where he had met her first. However he lost his way in the mountain, and it was night time. He saw a big shooting star, and when he began to wish, he found out that something was wrong. It was not a shooting star, but it was a falling space ship. He was involved in the crash, but he managed to survive by the help of an alien. However, he became a girl due to the accident during the reconstruction of his body.

[Source: Anime News Network]

Ranma and his partner Rera run a detective agency in Giraffe City. An arranged accident leaves Rera and Ranma in an unfortunate state where the two detectives swap bodies at the stroke of midnight. With Ranma dissapearing and the beautiful Rera appearing.

[Source: Anime News Network]

With the help of the combination of many different magic, Jun gets turned into an actual girl.

Maze wakes up in her house, everything is a wreck and she has amnesia. Before she can gather what has happened the girl Mill storms into her house thanking her for having saved her life. She tells Maze that her house suddenly fell down from the sky and crushed Mills pursuers under it. However before long they are both on the run from further pursuers who want their hands on princess Mill. They are only saved when Maze discovers that she has phantom light magical powers and can summon Mills family heirloom mecha. However her performance with the mecha is weak; that is until the sun goes down and she is turned in to a lecherous man. Soon other travellers join them as Maze tries to protect Mill and figure out what she is doing in this fantasy world.

[Source: Anime News Network]

Maze has gained incredible powers traveling through time and space, but she has also acquired one rather large problem: every night she turns into a really horny man. Unfortunately, Maze must rescue an equally lascivious princess from a mysterious warrior cult. Still, the male version of Maze would rather be chasing tail than rescuing willing princesses.

[Source: Anime News Network]