I, A Middle-aged Creepy Neighbor Who Lives In A Garbage Room, Was Cuckolded By A Stinking Dick And Kept Having An Orgasm Copulation. Natsu Igarashi

"The couple next door is all lovey-dovey every single day, talking about smells and dirt... they think I can't hear them, saying whatever they want..." Natsu unknowingly earns the resentment of the old man neighbor living in a trash room. When she goes to his filthy room to complain, she gets dragged inside, and the degenerate single man at rock bottom vents his daily frustrations and sexual urges on her, defiling her with his foul-smelling dick.