I Signed in at the Demon Gate to Become a Saint, but I Didn't Want to Go Out

Li Hao traveled through time and became a handyman of the Demon Sect. His first days were stable and comfortable. The system gave him the ability to "be invincible as long as he doesn't go out", and he spent a worry-free time in the magic gate. As time went by, he gradually grew from an inconspicuous handyman to a strong man who could run rampant in the sect. His strength continued to increase, and he felt invincible. However, he began to realize that the system was not entirely a good thing. It required him to keep a low profile and avoid external disputes, but this also made him gradually feel a sense of emptiness.