Dimidue

Dimidue is the Slash ship between Dimitri Alexandre Blaiddyd and Dedue Molinaro from the Fire Emblem fandom.

Canon
After a majority of the Faerghus royal family during the Tragedy of Duscur, the people of Duscur, including Dedue, became scapegoated by the people. However, the family's sole survivor, Dimitri, defended the Duscurians and saved Dedue's life from certain death. From that moment on, Dedue devoted his life to protecting Dimitri. Four years later, the two would attend Garreg Mach Monastery together as students under the Blue Lions house. Their fates from then on will be determined by which class the player chooses to teach.

Azure Moon
The only route where either are playable. At some point, during the timeskip, Dimitri gets captured and is about to be executed when Dedue saves him and is presumed dead in the process