My girlfriend's sister stole my fiancé, so I married her younger son and headed to the frontier. What awaited me at the end of the hardships was unexpected doting love and happiness.

姉に婚約者を寝取られたので訳あり令息と結婚して辺境へと向かいます～苦労の先に待っていたのは、まさかの溺愛と幸せでした～