The Demon Venerable's Carefree Days

Mu He wakes up inside a male-oriented power-progression novel as the hidden final boss. On the surface, she's a sweet, obedient, pitiful junior sister. In truth, she's the ambitious new Demon Lord, bent on conquering the Three Realms. She infiltrates the righteous sects and stokes conflict between them, hoping to reap the benefits, but is ultimately killed by the male lead after he ascends to immortality. Mu He decides to lie flat and give up. Every day, she looks forward to being exposed and sent back to the Demon Realm. When a powerful righteous cultivator is assassinated, she happens to show up at the murder scene. The people who come to investigate eye the two of them suspiciously, then look at their strikingly similar faces. By the next day, the news that Mu He, a true disciple of Xuan Sect, is the illegitimate daughter of one of the sect elders has spread across the cultivation world. Mu He: ... When the sect's thousand-year-old treasure is stolen, she's the last person to have been seen in the treasury. They check the water-mirror footage and discover that Mu He really did go inside. The next day, word gets around that the sect leader loves his junior sister so much that he gave her the key to the treasury. Mu He: Is it possible that I stole it? The male lead, who's been blamed for countless things, finally finds proof. In front of everyone, he accuses Mu He of being a spy sent by the Demon Realm! Mu He: I can't keep hiding it anymore. Just as everyone points their swords at her, the pressure of a Deity Transformation cultivator descends. A cool, clear male voice says, "If she's a demon, then doesn't that make me one too, her master?" Mu He: ⊙﹏⊙ A story about the most powerful cultivator in the righteous world defecting to the Demon Realm for a spy. So everyone decides to lie flat. Forget it, forget it. Whoever wants to manage these Three Realms can do it. Reading guide: 1. A power fantasy with a female lead. She's lazy in the early story, but becomes strong enough to crush everything in her path later on. Theme: Choose the righteous path with enthusiasm