Ah, I haven't thought about it yet, so let's just write it like this first.
It's just a story about a silly character who turns into a vicious female supporting character. Just write it and read it for fun.
What can I do when I know that I have become a vicious female lead? Of course, I have to hug the heroine's thigh tightly, otherwise NPCs like me will easily become hateful and burp their hands. I don't want to be rich and powerful, but just want to live an ignoble existence.
Concept: The salted fish heroine's lying-in victory