kashimashi
A yuri manga drawn by Katsura Yukimaru with story by Akahori Satoru (赤堀悟). The story focuses on Osaragi Hazumu, a normal, albeit effeminate high school boy who is killed when an alien spaceship crash lands on him, only to be restored to health as a girl. This results in a same-sex love triangle that Hazumu finds herself in with two of her best female friends.
An anime adaption aired in 2006.