When a high-ranking business emperor encountered the most uncontrollable "accident" in his life...
That fiancée who seemed weak and well-behaved turned out to be a yandere who just wanted to "lock him up" completely!
He has no system and no golden fingers, but relying on his insight into her morbid psychology, he falls into the abyss step by step, becoming crazier than her!
Either break free from this suffocating love and pay a heavy price; or sink into it and become her only prisoner!
The outside world was waiting to see how he would get rid of this trouble, but... He actually put on an exclusive collar for her with his own hands!
