The Tonight Show is debuting a second season of its microdrama satire Who Billionaire? Me Billionaire. The vertical, whose first season debuted in late July, will return for a second season during the Sunday, Sept. 27 episode of Jimmy Fallon‘s late-night show following Sunday Night Football. Sponsored by the oral care company TheraBreath, the series has been positioned as late-night television’s first microdrama. (The Daily Show is also planning a different satire of the format.) Who Billionaire? Me Billionaire season two will bring back stars Fallon, John Stamos, Kasey Esser, Rose Kelso and Delaney Rowe for some soapy, ultra-heightened…