I'm a Monster Hero, and I'm Determined to Defeat the Human Empress

How should I put it? The title and the content are completely different, and I can't change the title anymore, which is really frustrating.

(Me, the sharp-tongued System, and poverty)

In short, it's about:

Someone who accidentally transmigrates to another world and becomes an unwanted, disposable Hero, along with a sharp-tongued, tsundere System. To avoid starving to death and fight back against a life of poverty, they have no choice but to transform into a girl, cast aside their masculine pride, and embark on an adventure~