That Time My Late Husband Was Reincarnated as an Oni

After the War against the Gods, and her rehabilitation, Hikari retired from the battlefield with her two doll twins to try and live a quiet, peaceful life in a lush forest. However, things start to change when an Oni comes into town challenging people in the nearby village to fights. Concerned for the safety of her neighbors, she goes to confront this Oni herself. Not to mention a man seems to be interested in Cheryl and Sherrie.

Cover art is not mine