The Barbarian's Bride Vol. 3 (manga)

Serafina de Lavillant, the strongest knight in the West, was once sent to subdue the barbaric tribes of the East - but now she fights alongside them. While she may still be averse to the thought of marrying Veor, the barbarian heir who insists on being her groom, Sera nonetheless enjoys fighting by his side. After a successful rescue mission, the two take a break from all the battles.

But their world is soon shaken up again after discovering the true identity of Veor’s mother... a discovery that just might inspire Sera’s change of heart!