Dominant Yakuza and Wimpy Corporate Slave

Haruto, a company employee who becomes irresistibly seductive when he drinks, finds himself getting drunk after a late shift and crashing at a bar. Just when things take a wild turn, a striking yakuza named Yuuma appears and is unexpectedly kissed by the alluring Haruto. Captivated by the encounter, Yuuma swiftly takes Haruto to a hotel, where he is overwhelmed by intoxicating pleasure. The next day, Yuuma arrives at the office in a sleek black luxury car, ready to present Haruto with a tantalizing proposal..!?

(Source: CLLENN, translated)

Note: Includes one extra chapter.