Serafina "Crystal Helmet" De Lavillant

About

A female knight who served the Illdoren Kingdom as Commander of the Eastern Expeditionary Force, she is the eldest daughter of the noble Lavillant family.

Skilled in combat, she can even fight multiple opponents at once, and hold her own against opponents with greater physical strength than her.

She is 26 years old, and is yet to be married (she is past the typical age of marriage in this world).
Her family attempted to arrange marriages for her, but she grew frustrated at the role she was expected to take as a married woman, and beat all of her would-be husbands in duels.


After losing to Veor in a duel while fighting in the war between the Kingdom of Illdoren and the barbarians, she is brought to the barbarian settlement, where Veor proposes to her, much to her surprise.


It is later revealed that Veor fell in love with Serafina at first sight due to her skill with the sword.

(Source: Oneshot's last page bios)