That’s not possible because Ero would be an FL or a NBL instead. I know the translators chose to make Ero’s pronouns “He” but the original korean manhwa only uses gender neutral pronouns. Based on their words and the way they present themselves they’re either a trans woman or a nonbinary person.
***Spoilers***
I double checked and according to novel updates spoilers, they’re a trans woman.
What are you talking about he is a man that was forced to talk and wear woman's clothing so he could survive.
The ML is going to suck? Man, why can't Ero just be the ML, I actually like him