Plot

In Eliwood and Hector's B support, Hector had a dream about a future version of himself having a blue hair daughter. He tells Eliwood that he might not like this future, as this girl later is taken away by a red hair boy that Hector believes is from Pherae. Eliwood at first hopes that this doesn't come true for their sake. The boy and girl are eventually revealed to be their respective children, Lilina, Hector's daughter and Roy, Eliwood's son.

At the end of "The Blazing Blade" Eliwood and Hector meet again to introduce their respective children, who have the same age. Both fathers decide to let the children play.

Before the events of "The Binding Blade", Roy and Lilina were studying under the tutelage of General Cecilia of Etruria when suddenly Bern launches an invasion. At the time, Lilina was visiting Eliwood who was ill, but Castle Pherae is raided by bandits. Roy, with his knights, saved Lilina, Eliwood and Merlinus for the moment. Lilina rushes back to Ostia, but she is captured and taken hostage in her own castle. Roy invades Castle Ostia to rescue her and defeat Legance. If Lilina is succesfully rescued by Roy, she joins his army. She also shows Roy where the sword Durandal lies. From then, she accompanies Roy for the rest of the war.

Roy and Lilina can end up together if the player triggers their A support before any other girl does. (Shanna, Sophia, Sue, Cecilia or Larum) Given this condition, they marry and later, they both become the King and Queen of Lycia.