The Gakka province (Ma2) was one of the western provinces of the Matsu, its lands extending from the easternmost borders of the Scorpion territory, separated by the Three Sides River and the Spine of the World Mountains, to the northernmost borders of Heigen province (Ma5), to the easternmost borders of the Chuugen province (Ma1), being enveloped by the shouthernmost borders of Foshi province (Ki4). Notable locations within the province included Kenson Gakka (L14), Humble Village and the ruins of Shinden Yaruki Jukko.