ErenXMikasa: Lovers of War

Mikasa is a young 15 year old girl who lives in the Japanese kingdom of Shima.
Her father is the king of Shima but have an ultimate rival of the kingdom of Suski. They've been at each other tails for centuries! They have a river that separates the two kingdoms. But one day as Mikasa was being chased by a deadly wolf near the river that's when Eren the prince of Suski ran into Mikasa and saved her. They both began to fall in love. They both decided at a certain time of each day they would meet at the river.
Not only Eren was a prince he was also a musician and a solider. He fought during the wars with his father. Can their kingdoms hold them apart..?