@guunahgar Jang Ho is the Third Corps Commander, the guy with the big scar across his face who sent the anonymous letter to the Nirvana Pavilion (Ch 12). The MC's just trying to get him a promotion to Demon Lord to strengthen his side. The cult leader is the Heavenly Demon followed by the 8 Demon Supremes, Demon Lord is a rank somewhere below that. His older brother has not been introduced yet (Geom Muyang).