The Concupiscence Conjectures. (Or, Roy Mustang and Riza Hawkeye's very scientific theorem on making out.) With hypotheses to be proven and a summer to spare, Riza and Roy steal moments to themselves between their studies to work on their bonds. Part of The Soldier's Element Series. [Young Royai]

Roy Mustang was fairly certain that Riza Hawkeye had no intentions of retiring just to be a housewife, and for that he loved her. However, when it appears that he'll have to run for office, Roy proposes she become something more - a First Lady. Royai