Multi-dimensional parallel universes are connected by the "scumbag system". The surface mission of the system is to "travel through the planes and abuse the scum to be reborn", but in fact it hides the "soul binding" mechanism - the target of the attack in each plane (the male protagonist Qi Yuan) is the same soul fragment, which originated from the "Heart-locking Demon Lord" who was sealed in the ancient war between gods and demons. Su Liyuan is an ordinary white-collar worker in the real world. He was bound to the system after his death in a car accident. He originally wanted to take revenge on his ex-boyfriend/best friend, but his mission was completely robbed by Qi Yuan. From fighting each other to running in both directions, he finally unlocked the "eternal plane", the system collapsed, and HE returned.
Character settings:
The heroine Su Li: 25 years old. In reality, she is gentle and tough but has bad luck. After her rebirth, she has an online IQ and outstanding looks. She is eager for revenge in the early stage, but in the middle stage, she is loved to the heavens. Her catchphrase is "It's so sweet to fall in love."
The male protagonist Qi Yuan (multi-dimensional variant): Eternal soul, paranoid and affectionate, cold/handsome/domineering in appearance, but a bitch on the inside (loves to lock people + kneel and lick). His identity is different in each plane, but his soul is the same, and he always appears when the heroine is in danger.
System: Tsundere AI, complaining about the heroine's wit in the early stage, but then crashing and begging for mercy in the later stage.
Supporting characters: scumbag/green tea from every plane, branch villain; realistic branch: best friend/family, providing emotional buffer.