Running Hot and Cold

Overview

When Icchan's bathroom goes on the fritz, his coworker Junpei invites him to use the one at his place, but when they end up drunk and kiss on the second night, they enter into a physical relationship. The next day, Junpei's excited about going "all the way" with Icchan, but upon mentioning the name of an ex-coworker named Tsujii, Icchan's expression instantly changes, suggesting there was something between the two men. Junpei ends up not being able to get it up and Icchan leaves to return to his own home. Complete with a bonus story at the end, this awkward love story will captivate you and leave you breathless. (Source: Renta!) Note: Includes four extra chapters.

Source: AniList