Idk what the real reason for his mother to act so cruel to him but if you can't put aside the grudge towards your own son which its not even his fault. The way that his mom simply neglect him and can't accept reality afther losing his other son really make her didn't even deserve to be a mom. Broken family is real, we might see this as a petty things in manhwa but in reality it much worse. This manhwa portrayed the plot graciously beautiful and realistic 

Emotional thinker
p/s i have difficulty in remembering character names lmao
p/s i have difficulty in remembering character names lmao