Ishigami Senki

Mizuho territory in the northeastern part of the island nation of Hiwazu. On the wedding day of his elder brother, Lord Saku, Ukano Isaza, the younger brother of the lord, meets a woman of the "stone people" who is supposed to have been told in a fairy tale, and is forced to make a contract with her...? The war romance by Iroha Kohinata has just begun!