Celicalm

 is the het ship between Celica and Alm from the Fire Emblem fandom.

Canon
Celica and Alm met as children. And though they did not know it at the time, they were both the rightful rulers of Zofia and Rigel respectively. Both had been hidden away for different reasons.

They bonded quickly as children, often running off to spend time with each other, leaving their other friends in Ram Village behind. When a visitor took an interest in Celica's brand, Mycen had to take her away for her safety. Alm swore that they would meet again.

Years later, Celica and Alm both set out on separate journeys. They finally reunite in Zofia Castle. Though they are glad to see each other, Alm voices his intentions to invade Rigel and stop Emperor Rudolf. However, Celica believes they can reach a peaceful solution. Due to their different views, a rift forms between them, and they part on bad terms.

At the end of the war, Celica and Alm are wed, and Alm ascends the throne as the first ruler of the new country formed by the united Zofia and Rigel: Valentia.

Fanon
On AO3, they are the second most written ship in the Fire Emblem Echoes: Shadows of Valentia fandom.

Fandom
AO3

Trivia

 * Celica and Alm bare brands of their respective kingdoms, Zofia and Rigel, on their hands