Kojirase-kun wa Fan de Itai

Overview

An unforgettable memory for Shinobu Ichijou, an employee at a sports company... That is, doing naughty stuff with the high school friend he secretly looked up to. He wants to forget about it, but he even dreams of it and goes to work feeling frustrated. There, he learns that Soichiro Mikado, a professional baseball player, will be appearing in his company's new commercial! Shinobu can't seem to rejoice at the sight of this star right before his very eyes. That's because Soichiro's... the high school friend he can't get over...!! Shinobu wants to support him simply as a fan, but his body can't help but lust for him! This is a reunion love comedy between two high school friends. (Source: Renta!) Note: Includes 1 extra chapter.

Source: AniList