Flash Marriage: a Sickly Girl Is Doted on by a Wealthy Heir

"Yandere + Marriage First, Love Later + Doting on Wife + Contractual Marriage + Male Protagonist Pretending to Be a Pig and Eat a Tiger" A rich heir from another planet and a yandere heroine who was betrayed by her boyfriend of seven years got the certificate by accident. … She was insecure and he gave her a sense of security. She is possessive and he satisfies all her possessive desires. She is super clingy, but he is even more clingy than her. She was deeply ill and he was her panacea. …