Furachi na Boku wo Aishitamae

Komai, who has just started working as a delivery boy, hears groans coming out of the house where he was supposed to make a deliver that day, when he rushed to see what was happening, he found a man masturbating! As if that were not enough, he is pushed by that man, Amanomori, who happens to be a novelist, and gives him a blowjob...?! Since that day, Amanomori has been infatuated with him, but Komai, who thinks he is just a pervert, is surprised when he suddenly asks him to do it! Komai is a staunch straight boy, is he shifting in the wrong direction?!

(Source: Kodansha, translated)