Sono Koi, Jihanki de Kaemasu ka?

Salaryman Koiwai Ayumu just can’t tear his eyes away from the strong, muscular man as he checks on the stocks of the vending machine in his office. He may be a proper adult now, but everything about the emotions Yamashita awakens in him feels like a teenager’s first love…
(Source: Mangaupdates)
~~ Adapted from the manga series "Sono Koi, Jihanki de Kaemasu ka?" (その恋、自販機で買えますか？) by Yoshii Haruaki (吉井ハルアキ).