When you want someone to remember you , like really remember you, you need to make a strong impression. In that regard whether the impression is negative or positive doesn't matter. Jaeyoung is just trying to do that , he's trying to make himself known to the person (who he holds) responsible for his failure. Because the thought that , Sangwoo , a person who did this to him would just forget abt him altogether in the future , infuriates him.
When you want someone to remember you , like really remember you, you need to make a strong impression. In that regard whether the impression is negative or positive doesn't matter. Jaeyoung is just trying to do that , he's trying to make himself known to the person (who he holds) responsible for his failure. Because the thought that , Sangwoo , a person who did this to him would just forget abt him altogether in the future , infuriates him.