https://www.dlsite.com/comic/work/=/product_id/BJ650271.html
As always, please support the artist and buy his works.

Agonize, Adam-kun

"Why do you have a hard-on...? It's not fair."
In a world where all humans have ED due to the aftereffects of a pandemic, high school boy Kazuki is the only one who can have an erection.
Kazuki, a high school boy, is the only one who can get an erection. If he is found out, he will be a guinea pig for the rest of his life... I don't want to be a guinea pig for the rest of my life! In order to keep his secret, he transfers to a harem school full of girls! Even the kind and gentle Hime-no-senpai, a senior student, changes the color of her eyes as soon as she finds out that Kazuki can get an erection...
"If you feel sorry for me... why don't you have sex with me?"
Himeno gets excited with her heavy breathing, slowly takes off her clothes and intertwines his tongue with hers...
This is the story of one and only Adam, who is pressured by 4 billion frustrated Eves.

This just made a round on social media recently lol

https://nichegamer.com/social-media-outrage-modaete-yo-adam-kun/

Base +16, butbat +7, Jstain +6, kuukiyome +10

Look at you, how it reminds me of shuumatsu no harem, although they are giving more joke to the anime h than to the manga.

Base +6