Going through old unredeemed keys, that aren't my style

The protagonist, Tenka Kurono, is an adopted son of the Kurono family, who has been managing the Kuromiya Shrine for several generations. His older sister Mutsuki and upperclassman Rinna are runemasters - prana users who have been defending the land of commoners since ancient times. Alas, Tenka himself has no special powers, but his daily life is about to be shattered when he starts hearing his name being called in a dream...