Transmitted into a A/B/O novel as the villain

When I was on the verge of death, I got approached by a system which offered me a deal to go into his world and complete tasks inturn for me to go back 24 hours before my death. Even tho the deal sounded troublesome I reluctantly accepted.

This god damm system!!!! This stupid system forgot to mention that I was going into a A/B/O novel that I once red and on top of that I'm a villain who's going to die by taking his own life!

The point I arrived at the novel was at the middle and the original owner had already left a mess behind for him to clean up. When I looked up at the system screen in big bold letters it red-
'Cannot access until the relationship of the family reaches positive numbers'

So I started my new life as any other person would, playing house with my younger sister

(The pictures are not mine)