Pain perception 0, capture rate is 100!

A virtual reality game with pain perception set to '0'. I was the first to clear all endings, and started the final 100th playthrough... but something is off. Suddenly, I have a strange disease with a terminal setting, and the capture target characters are starting to worry about me.

"I don't feel any pain, so should I pretend to be sick?"

Before I knew it, to the capture target characters, I became a noble hero enduring pain and sacrificing for world peace. Since it has come to this, the concept for this playthrough is a terminally-ill hero throwing herself for the world! I must end it with a happy ending. This is my last playthrough in my life!