War of Heroes

The War of Heroes is the in-universe term used to describe the events of Fire Emblem: Monshō no Nazo that was the succesor of the War of Darkness during at Ankoku Ryū to Hikari no Tsurugi after Medusus was killed. It was lead by Emperor Hardin, that who was under in the control of the Darksphere and transforms into a powerful tyrant. He commands Akaneia to have a War against Altea and orders Marth to leave Altea forever, but he refused to leave and fights back. When Hardin was defeated by Marth, he frees his soul by with the Lightsphere, but he was unable to save his life in process and he forgives Marth and asks in his dying breath that he can watch over Nyna and tells him to tell her that he loved her till the end and hopes to forgive her for not being strong enough to resist the Darksphere's corruption. And Marth founds out that Gharnef was one responsible for Hardin's corruption and Medusus was revived again and changes into Dark Dragon form and Marth defeats Medusus once again to regain Akaneia. After the War, Marth chose Shiida as his wife and marries her, and he is declared to be the new Emperor of the entire continent of Akaneia, and spends his time rebuilding Akaneia with her in Pales the capital of Akaneia.