Fire Emblem/Ships

Abest
 Abest is the het ship between Abel and Est.

Alphonica
 Alphonica is the het ship between Alphonse and Veronica.

Canon
Alfonse is the prince of the kingdom of Askr, the leader of the Order of Heroes, and alongside his younger sister Sharena and Anna, an Askr commander. Veronica is the heir apparent to the Emblian Empire who is afflicted by the blood curse of the dragon Embla, which compels her to destroy Askr and its royal family under Embla's control.

Originally an antagonist, Veronica's relationship with Alfonse and the Order of Heroes has since become far more amicable, with Veronica appearing more often as an ally from Book III onward when they first form an alliance to defeat Hel, the Queen of the Realm of the Dead, rather than an enemy. They later also team up to find her older brother Bruno--who is also a friend of Alfonse and Sharena's--and stop an invasion from Fáfnir in Books IV and V. In Book VI, Veronica begins to succumb to the aforementioned blood curse. When she senses this happening, she tells Alfonse and the others to flee while they still can. In return, the Order of Heroes and Bruno come up with a plan to save her from the curse and the sinister Letizia.

Supplementary media such as the Chibi Playhouse shorts strongly imply that Veronica has feelings for Alfonse, though no hints have been given as to whether or not Alfonse reciprocates these feelings. In a crossover event with the Dragalia Lost game, they set their differences aside to work together to return to their world after finding themselves in the world of Dragalia Lost.

Fanon
Alphonica originally began as a "crack pairing," where fans would only ship them ironically, due to the fact they were enemies. This changed after Book III revealed that Lif and Thrasir, two of the book's antagonists, were revealed to actually future versions of Alfonse and Veronica, respectively. The book also implied that Lif and Thrasir have a romantic relationship, or at least a very close platonic one, as evidenced by the two teaming up as a Duo Hero in the game's 2021 Valentine's banner, where their present selves also appear, albeit as separate Heroes alongside Alphonse's parents. The ship thus became an extension of Lifsir (Lif/Thrasir) and vice versa to many fans, with support of Alphonica gradually increasing with the release of Book VI, which focuses on Veronica's blood curse with Embla.

Fandom
FAN FICTION

Caintria
 Caintria is the het ship between Cain and Catria.

Camnya
 Caintria is the het ship between Camus and Nyna.

Catriabel
 Catriabel is the het ship between Catria and Abel.

Catriarth
 Catriarth is the het ship between Catria and Marth.

Cecildrick
 Cecildrick is the het ship between Cecil and Roderick.

HarNya
 HarNya is the het ship between Hardin and Nyna.

LindeMerric
 LindeMerric is the het ship between Linde and Merric.

LuCecil
 LuCecil is the het ship between Luke and Cecil.

MarTiki
 MarTiki is the het ship between Marth and Tiki.

Merrilice
 Merrilice is the het ship between Merric and Elice.

Midiastram
 Midiastram is the het ship between Midia and Astram.

NaPhina
 NaPhina is the het ship between Navarre and Phina.

Pallabel
 Pallabel is the het ship between Palla and Abel.

SamSheena
 Samsheena is the het ship between Samuel and Sheena.