Realizing I Was The Evil Side Character

Synopsis

I sponsored Henry Gardner for ten years. He finally said he wanted to marry me, but on the condition that I got sterilized and adopted a child from an orphanage. When I prepared to adopt a girl named Noreen Rye, words appeared before my eyes. [Congrats to the side character for becoming the ultimate sucker. Noreen is the child of the male and female leads.] [Noreen will kill the side character soon, and all her assets would belong to their perfect family of three.] [Serves her right. After all, she ruined the leads' romance just because she had a bit of money.] My breathing froze. I turned and walked toward the corner of the yard, where a child who just finished fighting sat, looking sullen while putting on her shoes. Words flew past again. [No! That's the future ultimate villain who would oppose the leads to the end!] [Did the evil side character lose her mind? I wish I could slap her right now] Well, evil side characters and ultimate villain belonged together, right?