Buchou to Kachou

One day, Shiraishi Kei is suddenly asked by his subordinate, Kurosaki Gorou, “Do you think my nipples look weird?” In truth, Kurosaki was once Shiraishi’s student back when he was a teacher, and the real reason Shiraishi quit teaching was because he developed forbidden feelings for him. Ever since running into Kurosaki again during a company information session while he was job hunting, Shiraishi has carefully maintained their relationship as “boss and subordinate” and “slightly age-gap friends.” But when Kurosaki, completely unaware, shows off his sensitized pink nipples, the feelings Shiraishi has been suppressing all this time suddenly erupt...!?

(Source: Takeshobo, translated)

Note: Includes one extra chapter.