婚約破棄された悪役令嬢が辺境モブ貴族の俺の家に嫁いできたのだが、めちゃくちゃできる良い嫁なんだが？ (Associated Names)

Ragna has reincarnated as the third son of a noble family with lands in the frontier. Thrilled at the prospect of living freely in another world without the responsibility of inheriting the family estate, his excitement was short-lived. Following the death of his father and two brothers in battle, Ragna finds himself unexpectedly taking over…