Mike Tyson says some topics in his “raw” one-man Broadway show, “Mike Tyson: Undisputed Truth,” could bring him to tears onstage. “I have to be careful. I can’t stay on certain subjects for a long time, because I might cry,” the former champ said while announcing that the show he debuted in Las Vegas is coming to the Longacre Theatre for a limited run of six performances, starting July 31. Tyson’s hoping the Spike Lee-directed show will be part of a run of projects for him and his co-writer, wife Kiki Spicer. “This is what we decided to do after I gave up using drugs and being a pig and stuff,” Tyson quipped. “I’ll do other people’s stories, and I’ll do other characters. This is just the beginning.” Tyson said his performance, which addresses his time in prison for rape and rocky relationships, including his time with ex-wife Robin Givens, will be “raw,” but, “not raw in a vulgar sense . . . I’m just . . . vulnerable and telling you where I’m from, and how this happened, and how I [lost] all this damn money, and how I have all these children, and how I go to prison.”