Master, My Junior Sister Went Rogue with Forbidden Cultivation!

When their master assigns the legendary Heart-Taming Technique, the eldest disciple meditates for years while the second studies ancient texts—but the youngest? She takes a shortcut through soul replication and forbidden arts. Why waste decades when you can steal divine spells directly? Her evil cultivation skyrockets her power, but as demonic techniques consume her soul, a blood curse turns her eyes crimson and her heart black. Now she's mastered soul-devouring arts that can shatter the heavens themselves. Her final vow echoes through the realms: "I'll drag every immortal in the Heavenly Cour…