It's definitely not fair, but it looks like it was another family that relied a lot on the dad's income to stay stable. She probably didn't think she could take care of him properly through a messy divorce, swinging income, any sort of custody battle, etc.
Frrr..As a person with compassion and empathy, I couldn't do this. I remember a dog that I took care for almost a year then suddenly died. The pain was unimaginable that I cried for almost a month. I still miss my dog until today. But this?? How could you?! I even took care a kid who wasn't even related to me and also ugly cried when his parents took him.
what the hell was wrong with the foster parents what the fuck they really fostered mokyeon just to fill the void of having one perfect family and the moment that ended, they just easily tossed him aside?? icb they didn't even feel an ounce of love to keep him makes me so fucking mad