Romeria Senki: Hakushaku Reijou, Maou wo Taoshita Ato mo Jinrui Yabasou dakara Guntai Soshiki Suru

Romelia accompanies her fiancé on a mission to defeat the Demon King but is later dismissed as unhelpful and sent back to her home, with their engagement broken off. While others return as heroes, she is viewed as a failure. During the journey, she developed skills in trade, negotiation, finance, and intelligence gathering, despite lacking magic or combat abilities. Now, she intends to use these talents to aid her family’s region and the broader kingdom, which remains in turmoil. Although the Demon King is dead, his remaining forces still pose a threat. Using her intellect, Romelia aims to raise an army and protect the kingdom, regardless of the cost.