It's novel is actually quite good, I recommend it.

I read one , where MC's little brother was emotionless, no laughing, no crying. Their parents became paranoid, the mom questioning if he was their son and started to avoid the little brother in their family time, then they thought MC is strange too as he treated his brother normally. They eventually started to see the little brother as a monster. To avoid them they went to trips and died in one. The MC a high schooler raised his brother who become a S class hunter.
Title:  ' The S-classes that I raised'
I wanted to say that this couple tried their best for her and didn't avoid her.

Read the novel years ago and forgot but as soon as I saw the egg, I immediately remembered. 😂😂