Zenbu Kimi no Sei

A romantic comedy of uncertain characters. Sagimiya Ryou, the main character, woke up as a girl one day because of the effects of an unknown sex change syndrome. Ryou, now living with this rare syndrome, meets Mikami Nagisa on a tour of Tensei Gakuen high school. As the two find each other in a cosplay cafe, Ryou discovers Nagisa's secret.

A (physical) mixed romantic comedy!

Links:

• Alternative Official Raw - ComicWalker, Nico Nico Seiga