Little Death Bringer

Being raised by the King and Queen of the Elves has given Marin quite a diverse background. Burdened by her humanity and femininity, she must push herself and train every day to hold her own against the elves around her. But while Marin wants to be the first girl to graduate Macon Academy as a mercenary, her mother wants her to be a lady. And an attempt by an unknown enemy to kidnap Marin is not helping her case. Between the kidnapping attempt, growing feelings for her best male friend, and now a fiery magic growing within her, Marin's life is changing in ways she can't understand.

Marin's small reprieve at the Elven Kingdom turns into a longer visit than originally planned after Favian is sent on a mission with Kato and she cannot join. When Marin meets Favian's identical twin, who had been stolen at birth, she's overcome by confusion as she starts to fall for him. She still loves Favian, even if he'll soon start courting female elves and leave their partnership behind.