"Eh, you're kidding! Only I can get an erection in the class? No, no, no, only I can get an erection in the whole world!?" A year after all men in the world lost their erectile function... In a timeline where I'm the only one who can get an erection, I entered my super-popular period!! The era when female classmates could only be satisfied with lace has officially ended!! HUNTC-616

It's been a year since all men in the world lost their erectile function... Girls can only satisfy their sexual desires through other girls. But in fact, in this world, for some reason, only I can get an erection! And I kept this a secret... until the day it was discovered... One day, the girls in my class found out! From then on... I, who used to be completely ignored, suddenly became incredibly popular! No... rather than popular, I became a sex machine to help them deal with their excess sexual desires... Whenever I was alone, they would semi-force me to get an erection and demand penetration! They even ganged up on me, engaging in orgy-like acts of reverse rape... Of course, I was forced to ejaculate inside them without a condom countless times! In short, during school, my erect penis was constantly being stared at by them! Although it was a happy miscalculation, my stamina was really starting to give out...