
If you're looking for anime similar to Danshi Koukousei ga Mahou Shoujo ni Naru Hanashi, you might like these titles.
Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing’s for sure…life is going to get a whole lot weirder from here on out!
Sasami Kawai leads an ordinary life; she attends school, helps out at her parents’ music store, and tries to bring her shy friend Misao Amano out of her shell. However, things change when she meets a strange talking animal named Ryo-Oki and subsequently becomes involved in the contest to decide the next queen of the magical world of Juraihelm. At the risk of great personal embarrassment, Sasami transforms into Pretty Sammy, a magical girl charged with doing good deeds to restore balance in Juraihelm. But standing in her way are rival magical girl Pixy Misa and her hordes of Love-Love Monsters. Now, Sasami must juggle her magical girl obligations with dealing with the boys in her class, her ditzy homeroom teacher Mihoshi, and a certain mad scientist of a teacher who is hell-bent on discovering the secrets of magical girls!
Pretty Sammy is a light comedy taking place in an alternate Tenchiverse. Sasami, the adorable girl from Tenchi Muyo, gets the spotlight as she is turned into a "magical girl" by Tsunami, an otherworldly woman from Juraihelm. However, Sasami's best friend is also transformed into a magical girl, and consequently, her arch-rival. Hijinks ensue in this strange, but funny series.
Natsuru dreamt of being a lady killer. Instead, he got turned into a Kämpfer, a lady who’s supposed to fight and kill! Now, he’s stuck splitting his/her days between being a typical Japanese boy and an atypical Japanese girl. What's worse, Natsuru’s convinced to move in with three other Kämpfers, and things really get hopping when Natsuru takes a job at the Bunnygirl Café! Getting in touch with your feminine side’s a full-contact, no-holds-barred, Amazon action-fest in Kämpfer für die Liebe!
Natsuru used to be a typical student with a crush on Kaede, one of the school idols, until one day he awakens to discover that he’s turned into a busty girl! Having been chosen to become a Kampfer by the mysterious Moderators, Natsuru is now required to not only fight other Kampfers, but also to transform into a girl while doing so. Aided by a stuffed tiger, Natsuru must now battle it out with other boobalicious babes and continue to try to get close to Kaede – a task that will now be easier as she’s fallen for Natsuru’s female form! Can Natsuru keep his secret safe while maintaining his double life?