"Scumbag Erection NTR!" is a work that depicts the protagonist witnessing his beautiful girlfriend being entrapped by delinquents, drugged and becoming lewd, engaging in sexual acts with other men, which arouses sexual excitement. The unique plot where the protagonist feels a sense of taboo and gets an erection when his lover has sexual intercourse with another man is appealing. Additionally, the diminished power of the scary delinquents makes it easier to watch, adding to the highlights.