Nonke II: Shiawase ni narô ya!

Overview:

Set in Osaka, Oishi finds himself gay because he couldn't sleep with Kaori, the girl he was dating when he was in high school. Now he is secretely in love with his colleague but that guy is straight. One day he meets a man who claims sleeping with him will give better luck. His popularity does start increasing as he continues his manzai comedy work. However, his colleague wants to quit comedy and marry Kaori since the two were secretely dating.