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"Personally, The Last Guardian was very emotionally important, a great reveal, but for me the announcement of Horizon from Guerrilla Games is actually the biggest project for me for this E3 to announce because it's a big project and a new IP.http://www.polygon.com/2015/6/18/8802349/sony-was-worried-about-a-female-protagonist-in-killzone-devs-new-ip
"I was nervous to see the reaction from people."
There was a third reason that Yoshida was nervous to see how people would react to the game: Horizon's protagonist is a young woman.
"She's a female lead character," he said. "That has always been the vision by the team, but we had a discussion. Is it risky to do a female character?"