Love Game in Eastern Fantasy

The demons of this world run amok; it’s time for the children of heroes to fill in their own legends. Unfortunately, you’re not the cold and incorruptible female lead. You’re not even the high-status, delicate and charming second female lead: You’re just the detestable cannon fodder female number three!
The original host was secretly in love with the male lead while a fanatic in harming the female lead from the dark. Till the very end, she was merely a stumbling block for the love between the male lead and female lead. She let herself get stepped all over by the second male lead and lived a life that could only described as ‘s*upid’.