Just like Do San, sometimes when I get nervous, I also tremble.
Yet, they remain fully committed to finding success.
Most likely the only way StartUp Season 4 will happen is if Netflix goes a step further, figures out whatever legal entanglements there may be, and orders a Season 4.
Trailers - Teasers: The first teaser of the show was released in September and featured the four main characters who explain what the show is going to be about -- a start-up.