So i just remember it’s a black and white manhwa or manga idk what it was but the story goes like this it starts with the mc(he was a teacher in university) who broke up with his lover on the first chapter and his lover(now ex,he was blonde by the way)had a younger brother (this younger brother does everything his older brother does,he copies him or when his older brother did smth he would do the same).The younger brother is black hair and has problems with his personality like inferiority complex with his brother which was caused by his father,but the father always blamed the younger one instead of doing smth,so when the older brother broke up with the mc,the younger brother comes after mc and he wants to have him too just like his brother.
So i just remember it’s a black and white manhwa or manga idk what it was but the story goes like this it starts with the mc(he was a teacher in university) who broke up with his lover on the first chapter and his lover(now ex,he was blonde by the way)had a younger brother (this younger brother does everything his older brother does,he copies him or when his older brother did smth he would do the same).The younger brother is black hair and has problems with his personality like inferiority complex with his brother which was caused by his father,but the father always blamed the younger one instead of doing smth,so when the older brother broke up with the mc,the younger brother comes after mc and he wants to have him too just like his brother.